Keycloak 26.4.5 → 26.6.2
13 releases · 1 breaking change · 50 security fixes · 2 advisories fixed
50security1breaking2deprecated94feature102fix
Vulnerabilities fixed by this upgrade
- 7.7 CVE-2026-2092 Keycloak: Unauthorized access via improper validation of encrypted SAML assertions
- 5.5 CVE-2025-13467 Deserialization of Untrusted Data in LDAP User Federation
Breaking changes
- breaking #42905 Remove PostgreSQL 13.x support in 26.5.0
Security changes
- security #47485 CVE-2026-33871 HTTP/2 CONTINUATION Frame Flood Denial of Service in 26.6.2
- security #47486 CVE-2026-33870 RFC violation: HTTP Request Smuggling primitive via Chunked Extension Quoted-String Parsing in 26.6.2
- security #47932 [CVE-2026-4628] Improper Access Control on Keycloak Server through UMA resource management endpoints via PUT parameters authorization-services in 26.6.2
- security #48049 [CVE-2026-37980] Stored XSS in select-organization.ftl - FreeMarker HTML-escape insufficient in inline JS handler organizations in 26.6.2
- security #48275 CVE-2026-5588 Bouncy Castle Crypto Package For Java: Use of a Broken or Risky Cryptographic Algorithm vulnerability in bcpkix modules core in 26.6.2
- security #48388 [CVE-2026-6856] Acceptable AAGUID policy bypass via packed self-attestation in WebAuthn registration authentication/webauthn in 26.6.2
- security #48570 [CVE‐2026‐0636, CVE‐2026‐3505, CVE‐2026‐5598] Multiple bouncycastle CVEs core in 26.6.2
- security #49108 [CVE-2026-7307] Denial of service when sending a crafted request to the /saml endpoint in 26.6.2
- security #49109 [CVE-2026-7504] Security Vulnerability Report: Redirect URI Validation Bypass in Keycloak in 26.6.2
- security #49110 [CVE-2026-7571] Access token disclosure and implicit flow bypass via forged client data in 26.6.2
- security #49111 [CVE-2026-7507] Session fixation in OIDC login flow leading to account takeover in 26.6.2
- security #49112 [CVE-2026-37982] Execute-actions token replay allows unauthorized WebAuthn credential enrollment on victim account in 26.6.2
- security #49113 [CVE-2026-37979] OIDC Introspection endpoint does not enforce audience restriction, leaking claims from lightweight access tokens in 26.6.2
- security #49114 [CVE-2026-37978] Cross-role PII leakage via evaluate-scopes endpoints bypasses user view permission in 26.6.2
- security #49115 [CVE-2026-4630] Keycloak Authorization Services Protection API IDOR (Cross-Resource Server Access) in 26.6.2
- security #49116 [CVE-2026-37981] Broken Access Control in Account Resources User Lookup allows PII enumeration in 26.6.2
- security #47276 CVE-2026-4366 Blind Server-Side Request Forgery (SSRF) via HTTP Redirect Handling core in 26.6.1
- security #47619 CVE-2026-4633 Keycloak user enumeration via identity-first login core in 26.6.1
- security #45493 CVE-2025-14083 keycloak-server: Keycloak: Improper Access Control in Admin REST API leads to information disclosure admin/api in 26.5.7
- security #45569 CVE-2026-1002 - io.vertx/vertx-core: static handler component cache can be manipulated to deny the access to static files in 26.5.7
- security #47069 CVE-2026-3429 Improper Access Control for LoA During Credential Deletion account/api in 26.5.7
- security #47716 CVE-2026-4634 Keycloak Application-Level DoS via Scope Processing in 26.5.7
- security #47717 CVE-2026-4636 UMA Policy Resource Injection Allows Unauthorized Cross-User Permission Grants in 26.5.7
- security #47718 CVE-2026-3872 Redirect URI validation bypass via ..;/ path traversal in OIDC auth endpoint in 26.5.7
- security #47719 CVE-2026-4282 Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw in 26.5.7
- security #45645 CVE-2026-1180 - Blind Server-Side Request Forgery (SSRF) in Keycloak OIDC Dynamic Client Registration via jwks_uri oidc in 26.5.6
- security #45647 CVE-2026-1035 - Keycloak Refresh Token Reuse Bypass via TOCTOU Race Condition oidc in 26.5.6
- security #45650 CVE-2025-14777 - Keycloak IDOR in realm client creating/deleting in 26.5.6
- security #45653 CVE-2025-14082 keycloak-server: Keycloak Admin REST API: Improper Access Control leads to sensitive role metadata information disclosure in 26.5.6
- security #46719 CVE-2026-3121 - Keycloak: Privilege escalation via manage-clients permission in 26.5.6
- security #46723 CVE-2026-3190 - Information Disclosure via improper role enforcement in UMA 2.0 Protection API core in 26.5.6
- security #46922 CVE-2026-3911 Keycloak: Information disclosure of disabled user attributes via administrative endpoint user-profile in 26.5.6
- security #47062 CVE-2026-2366 Authorization Bypass: Unprivileged tokens can enumerate user organization memberships organizations in 26.5.6
- security #46909 CVE-2026-3047 SAML broker: Authentication bypass due to disabled SAML client completing IdP-initiated login in 26.5.5
- security #46910 CVE-2026-3009 Improper Enforcement of Disabled Identity Provider in IdentityBrokerService in 26.5.5
- security #46911 CVE-2026-2603 Disabled SAML IdP still allows IdP-initiated broker login in 26.5.5
- security #46912 CVE-2026-2092 saml broker encrypted assertion injection in 26.5.5
- security #45646 CVE-2026-1190 - Keycloak SAML brokering: Response delay due to unchecked NotOnOrAfter in SubjectConfirmationData saml in 26.5.4
- security #45649 CVE-2026-0707: Keycloak Authorization Header Parsing Leading to Potential Security Control Bypass in 26.5.4
- security #45776 CVE-2025-5416 keycloak-core: Keycloak Environment Information in 26.5.4
- security #46372 CVE-2026-2575 - Denial of Service due to excessive SAMLRequest decompression saml in 26.5.4
- security #46462 CVE-2026-2733 Missing Check on Disabled Client for Docker Registry Protocol in 26.5.4
- security #46144 CVE-2026-1609 Disabled users can still obtain tokens via JWT Authorization Grant in 26.5.3
- security #46145 CVE-2026-1529 Forged invitation JWT enables cross-organization self-registration in 26.5.3
- security #46146 CVE-2026-1486 Logic Bypass in JWT Authorization Grant Allows Authentication via Disabled Identity Providers in 26.5.3
- security #46147 CVE-2025-14778 Incorrect ownership checks in /uma-policy/ in 26.5.3
- security #44994 CVE-2025-67735 - netty-codec-http: Request Smuggling via CRLF Injection dependencies in 26.5.2
- security #45570 CVE-2025-66560 - io.quarkus/quarkus-rest: Quarkus REST Worker Thread Exhaustion Vulnerability in 26.5.2
- security #45651 CVE-2025-14559 keycloak-services: Keycloak keycloak-services: Business logic flaw allows unauthorized token issuance for disabled users in 26.5.2
- security #44478 CVE-2025-13467 Deserialization of untrusted data in ldap user federation in 26.4.6
Deprecations
- deprecated #45156 Deprecate Token Exchange v1 in 26.6.0
- deprecated #44121 Deprecate Fine-Grained Admin Permissions v1 admin/fine-grained-permissions in 26.5.0
Every release in between
security#47485 CVE-2026-33871 HTTP/2 CONTINUATION Frame Flood Denial of Service
security#47486 CVE-2026-33870 RFC violation: HTTP Request Smuggling primitive via Chunked Extension Quoted-String Parsing
security#47932 [CVE-2026-4628] Improper Access Control on Keycloak Server through UMA resource management endpoints via PUT parameters authorization-services
security#48049 [CVE-2026-37980] Stored XSS in select-organization.ftl - FreeMarker HTML-escape insufficient in inline JS handler organizations
security#48275 CVE-2026-5588 Bouncy Castle Crypto Package For Java: Use of a Broken or Risky Cryptographic Algorithm vulnerability in bcpkix modules core
security#48388 [CVE-2026-6856] Acceptable AAGUID policy bypass via packed self-attestation in WebAuthn registration authentication/webauthn
security#48570 [CVE‐2026‐0636, CVE‐2026‐3505, CVE‐2026‐5598] Multiple bouncycastle CVEs core
security#49108 [CVE-2026-7307] Denial of service when sending a crafted request to the /saml endpoint
security#49109 [CVE-2026-7504] Security Vulnerability Report: Redirect URI Validation Bypass in Keycloak
security#49110 [CVE-2026-7571] Access token disclosure and implicit flow bypass via forged client data
security#49111 [CVE-2026-7507] Session fixation in OIDC login flow leading to account takeover
security#49112 [CVE-2026-37982] Execute-actions token replay allows unauthorized WebAuthn credential enrollment on victim account
security#49113 [CVE-2026-37979] OIDC Introspection endpoint does not enforce audience restriction, leaking claims from lightweight access tokens
security#49114 [CVE-2026-37978] Cross-role PII leakage via evaluate-scopes endpoints bypasses user view permission
security#49115 [CVE-2026-4630] Keycloak Authorization Services Protection API IDOR (Cross-Resource Server Access)
security#49116 [CVE-2026-37981] Broken Access Control in Account Resources User Lookup allows PII enumeration
feature#47728 Monitor backups for CNPG - describe how to monitor it in the CNPG for backups installation guide
feature#47734 Add dedicated "Monitoring Standbys" section to the general installation documentation
feature#48329 JDBC_PING in 26.6 should not fail with 26.7 schema changes
feature#48348 Escape expressions in JS blocks in FTL pages
feature#48687 Upgrade to Quarkus 3.33.1.1
fix#38526 Duplicate user attribute values cannot be removed core
fix#40602 Account UI reports "Something went wrong" when opening an unknown path account/ui
fix#47882 Broken link in deploy-cnpg docs
fix#47901 Realm import with --import-realm fails with ModelValidationException when Admin Permissions is enabled admin/fine-grained-permissions
fix#47915 FreeMarker templates allow instantiation of new objects and even running OS commands login/ui
fix#47987 FGAP v2 Specific Group permission has no scopes found in resource admin/fine-grained-permissions
fix#48030 Update to operator version 26.6.0 needs deletion of all objects operator
fix#48040 User session limit generates fatal error authentication
fix#48094 Wrong referenced resource type in Workflow handling for clients core
fix#48123 Clarify canonicalization in X.509 authentication authentication
fix#48143 Ordering of permission and policy calls leads to exposure of a client ID admin/api
fix#48185 Deleted workflow still attempting to run workflows
fix#48241 JavaScript Injection in frontchannel-logout.ftl via frontchannel-logout.title authentication
fix#48259 Kubernetes identity providers docs still mention it to be a preview feature docs
fix#48313 No escape approach for JS code inside the front channel logout FTL login/ui
fix#48536 Review migration guide for rolling updates changes workflows
fix#48629 WindowsServiceDistTest.testServiceLifecycle fails on slower runners due to insufficient startup timeout ci
security#47276 CVE-2026-4366 Blind Server-Side Request Forgery (SSRF) via HTTP Redirect Handling core
security#47619 CVE-2026-4633 Keycloak user enumeration via identity-first login core
feature#47839 Update CloudNativePG to 1.29
feature#47909 Database data at rest encryption
fix#47435 AuroraDB IT CI workflow not cleaning up databases testsuite
fix#47737 deploy-testsuite profile is incomplete, causing discrete testsuite execution to fail testsuite
fix#47776 False session type of access token in offline_access refresh token flow with scope parameter without offline_access scope oidc
fix#47827 az vm create fails with JSON parsing error ci
fix#47872 v26.6.0 Operator flood logs with warnings operator
fix#47889 Not possible to sync latest keycloak-admin-client to keycloak-client admin/client-java
fix#47904 @keycloak/keycloak-admin-client fails to install in version 26.6.0 admin/client-js
fix#47905 invalid package reference in keycloak-admin-ui admin/ui
fix#47908 MigrateTo26_6_0 modifies custom browser flows, breaking existing realm authentication organizations
fix#47929 User profile multiselect options not highlighted as selected in dropdown admin/ui
fix#47955 IdentityProviderAuthenticator creates an infinite redirect loop when an IdP returns an error (e.g. access_denied) and the login was initiated with kc_idp_hint identity-brokering
fix#48015 Missing explicit docs anchor for organizations docs
fix#48032 Endpoint Response Text during Bootstrap contains Typo: Boostrap dist/quarkus
featureJWT Authorization Grant, enabling external-to-internal token exchange using externally signed JWT assertions.
featureFederated client authentication, eliminating the need to manage individual client secrets in Keycloak.
featureWorkflows, enabling administrators to automate realm administrative tasks such as user and client lifecycle management.
featureZero-downtime patch releases, allowing rolling updates within a minor release stream without service downtime.
featureThe Keycloak Test Framework, replacing the previous Arquillian-based solution.
featureConfigure TLS for the database connection.
featureDatabase connection timeouts.
featureTransaction timeouts with production-ready defaults.
feature/var/run/secrets/kubernetes.io/serviceaccount/ca.crt (Kubernetes service account CA)
feature/var/run/secrets/kubernetes.io/serviceaccount/service-ca.crt (OpenShift service CA)
deprecated#45156 Deprecate Token Exchange v1
feature#10155 Step-up authentication for SAML clients authentication
feature#13102 Add support for specifying `client.secret` using vault core
feature#39888 Workflows
feature#42634 Federated client authentication
feature#43144 OAuth Identity and Authorization Chaining Across Domains
feature#43146 New test framework
feature#43152 Authorization Grants
feature#43252 Zero-downtime upgrades between patch releases of Keycloak
feature#43257 Support a Kubernetes Native Database
feature#43507 Add support for Organization-specific Groups
feature#43576 Authorization grant for social providers token-exchange/federated
feature#44833 [OID4VCI] Make natural_person configuration available in all formats oid4vc
feature#45106 OAuth Client ID Metadata Document
feature#45284 CIMD - Persistent CIMD oidc
feature#46633 keycloak operator: add support for different port and name for the kubernetes service definition in the keycloak CRD
feature#47011 Add debug helper utility to the test framework test-framework
feature#10618 Enhancements to logging config dist/quarkus
feature#14523 Add support for enforced password change with LDAP federation ldap
feature#17904 Support RTL UI account/ui
feature#19374 Allow absolute path for cache-config-file? dist/quarkus
feature#19453 The default database transaction timeout should not be applied to Liquibase or data migrations dist/quarkus
feature#20618 Support enabling access logs dist/quarkus
feature#27986 Remove Liquibase dependency version from Keycloak root pom
feature#33160 Add support for X509 client certificate lookup for Envoy
feature#33198 Introduce `resourcesCommonUrl` for E-Mail templates core
feature#33818 Request for Enhancement: Make x509cert-lookup SPI public
feature#34435 OTEL: Add tracing ID to user facing error message observability
feature#35298 Reverse proxy provided context path not working despite setting X-Forwarded-Prefix header dist/quarkus
feature#36226 Provide a read only view of Identity Provider Mappers configuration screen to the Keycloak Admin UI
+333 more items in the release notessecurity#45493 CVE-2025-14083 keycloak-server: Keycloak: Improper Access Control in Admin REST API leads to information disclosure admin/api
security#45569 CVE-2026-1002 - io.vertx/vertx-core: static handler component cache can be manipulated to deny the access to static files
security#47069 CVE-2026-3429 Improper Access Control for LoA During Credential Deletion account/api
security#47716 CVE-2026-4634 Keycloak Application-Level DoS via Scope Processing
security#47717 CVE-2026-4636 UMA Policy Resource Injection Allows Unauthorized Cross-User Permission Grants
security#47718 CVE-2026-3872 Redirect URI validation bypass via ..;/ path traversal in OIDC auth endpoint
security#47719 CVE-2026-4282 Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw
feature#46631 Upgrade to Quarkus 3.27.3 dist/quarkus
fix#45204 Call without Host header throws uncaught error core
security#45645 CVE-2026-1180 - Blind Server-Side Request Forgery (SSRF) in Keycloak OIDC Dynamic Client Registration via jwks_uri oidc
security#45647 CVE-2026-1035 - Keycloak Refresh Token Reuse Bypass via TOCTOU Race Condition oidc
security#45650 CVE-2025-14777 - Keycloak IDOR in realm client creating/deleting
security#45653 CVE-2025-14082 keycloak-server: Keycloak Admin REST API: Improper Access Control leads to sensitive role metadata information disclosure
security#46719 CVE-2026-3121 - Keycloak: Privilege escalation via manage-clients permission
security#46723 CVE-2026-3190 - Information Disclosure via improper role enforcement in UMA 2.0 Protection API core
security#46922 CVE-2026-3911 Keycloak: Information disclosure of disabled user attributes via administrative endpoint user-profile
security#47062 CVE-2026-2366 Authorization Bypass: Unprivileged tokens can enumerate user organization memberships organizations
fix#45889 Federated user disabled when external DB unavailable, never re-enabled storage
fix#46239 AUTH_SESSION_ID cookie reuse causes cross-user session contamination on re-authentication authentication
fix#46296 UsersResource.search briefRepresentation started to return user attributes admin/api
fix#46379 Unexpected error when logging out with offline session and external IDP oidc
fix#46459 Operator-built DB config: targetServerType=primary not applied / connection validation not working after master-replica failover (26.5.0) operator
fix#46588 Partial LDAP sync duration does not follow the defined value in user federation ldap
fix#46605 26.5.4 startup regression with many realms: RealmCacheSession.prepareCachedRealm() scans master admin role composites per realm (O(N²)) core
fix#46656 Em-Hyphens in SPI options on cache configuration page docs
fix#46663 JGroups bind port configuration ignored when --cache-embedded-network-bind-port set infinispan
fix#46669 SPIFFE Client assertion throws a NullPointerException if no client is found token-exchange
fix#47079 Do not allow fetching organizations of a member if not a member of the current organization organizations
security#46909 CVE-2026-3047 SAML broker: Authentication bypass due to disabled SAML client completing IdP-initiated login
security#46910 CVE-2026-3009 Improper Enforcement of Disabled Identity Provider in IdentityBrokerService
security#46911 CVE-2026-2603 Disabled SAML IdP still allows IdP-initiated broker login
security#46912 CVE-2026-2092 saml broker encrypted assertion injection
security#45646 CVE-2026-1190 - Keycloak SAML brokering: Response delay due to unchecked NotOnOrAfter in SubjectConfirmationData saml
security#45649 CVE-2026-0707: Keycloak Authorization Header Parsing Leading to Potential Security Control Bypass
security#45776 CVE-2025-5416 keycloak-core: Keycloak Environment Information
security#46372 CVE-2026-2575 - Denial of Service due to excessive SAMLRequest decompression saml
security#46462 CVE-2026-2733 Missing Check on Disabled Client for Docker Registry Protocol
feature#46090 New key affinity for session ids
fix#44488 "Update email" AIA: "Back to Application" URL invokes OIDC callback with missing parameters oidc
fix#45065 Client deletion timeout due to large number of client roles storage
fix#45680 auth_mellon (SAML) authentication fails after upgrade to 26.5.1 (from 26.4.6) saml
fix#45728 Information Disclosure of Client Secret on Unauthenticated Config Endpoint oidc
fix#45874 Disabled organizations still resolve in organization‑aware login flows organizations
fix#45966 KeycloakRealmImport: Realm created in DB but not visible in Admin Console until restart operator
fix#45980 Keycloak cluster with 3 nodes and jdbc-ping stack fails to rejoin after temporary network partition infinispan
fix#46100 Makes Database Query on Every Login Page Load Instead of Using Cache infinispan
fix#46150 Move upgrading note for SAML to 26.5.4 docs
fix#46178 Regression: cannot authenticate in keycloak-admin-client adapter/javascript
fix#46290 Incorrect code used error, leading to "400 / Code already used" during Infinispan state transfers infinispan
fix#46303 JWT Authorization Grant: Always getting “Token was issued too far in the past to be used now” for EntraID issued tokens oidc
fix#46312 io.fabric8:docker-maven-plugin:0.40.3:start failed: Cannot invoke "com.google.gson.JsonElement.isJsonNull()" because the return value of "com.google.gson.JsonObject.get(String)" is null ci
security#46144 CVE-2026-1609 Disabled users can still obtain tokens via JWT Authorization Grant
security#46145 CVE-2026-1529 Forged invitation JWT enables cross-organization self-registration
security#46146 CVE-2026-1486 Logic Bypass in JWT Authorization Grant Allows Authentication via Disabled Identity Providers
security#46147 CVE-2025-14778 Incorrect ownership checks in /uma-policy/
feature#45892 Upgrade minikube for CI tests operator
fix#44379 Node.js admin client does not refresh tokens admin/client-js
fix#45459 k8s multiple restart (oomkilled) in v26.5.0-0 during startup because of RAM dist/quarkus
fix#45662 Increase in startup memory consumption in post 26.5 versions dist/quarkus
fix#45677 Hibernate Validator is enabled by default when not used dist/quarkus
fix#45708 Unpexted value '' in mixed-cluster-compatibility-tests testsuite
fix#45745 mixed-cluster-compatibility-tests fail due to incorrectly masked content in 26.5 branch ci
fix#45755 Broken YAML indentation in operator rolling updates doc docs
fix#45780 Remove fatal log messages from `ConsistentHash`
security#44994 CVE-2025-67735 - netty-codec-http: Request Smuggling via CRLF Injection dependencies
feature#43443 Keycloak should warn when ISPN or JGROUPS is running in debug level logging
feature#45498 Ignore OpenAPI artifacts when disabled dist/quarkus
fix#44785 Can not get through SSO login if using a custom attribute with default value user-profile
fix#45015 Deadlock in Infinispan virtual threads infinispan
fix#45250 IDToken contains duplicate address claims oidc
fix#45333 User admin events don't show role, group mapping, reset password like events admin/ui
fix#45396 Database Migration fails when updating to 26.5.0 on MS SQL core
fix#45415 cache-remote-host becomes mandatory at build time when using clusterless feature infinispan
fix#45417 Unmanaged Attributes Type (Only administrators can view) allows admin API to set Unmanaged Attributes user-profile
fix#45474 Admin REST API document is not up to date docs
fix#45526 Regression (26.5.1): Organizations domain resolution fails on MariaDB/MySQL due to ORG/ORG_DOMAIN collation mismatch organizations
fix#45533 Keycloak should not allow matrix parameters in URLs as we don't use them dist/quarkus
security#45570 CVE-2025-66560 - io.quarkus/quarkus-rest: Quarkus REST Worker Thread Exhaustion Vulnerability
fix#45584 Keycloak supported specs should list DPoP as supported oidc
fix#45590 OIDCIdentityProviderConfig issuer configuration token-exchange
fix#45597 Possible mismatch of charset/collation between columns on mysql/mariadb organizations
security#45651 CVE-2025-14559 keycloak-services: Keycloak keycloak-services: Business logic flaw allows unauthorized token issuance for disabled users
feature#44863 x-robots HTTP header missing for static Keycloak resources, and REST endpoint responses
feature#45009 Performance improvement: Missing indexes on BROKER_LINK table columns
feature#45182 Allow full managing of realms from master realm without global admin role
fix#43975 Test Framework -> Embedded server -> Maven execution failure: Failed to read script file from: scripts/default-policy.js test-framework
fix#44371 403 Forbidden when assigning realm-management client roles despite FGAP disabled (regression in 26.4.0+) admin/fine-grained-permissions
fix#44417 Security issue with Organization feature exposes and fills the account name automatically in user/password form organizations
fix#44783 Create Realm button is missing when user has create-realm role admin/ui
fix#44860 Admin UI: slow response time listing second user page admin/ui
fix#45003 Bug in JWTClientAuthenticator and JWTClientSecretAuthenticator causes NPE authentication
fix#45093 Enable visibility of Role Mapping tab for users with view-users role admin/ui
fix#45107 Failed upgrade to 26.4.7 - sql generated for manual database upgrade contains invalid statements storage
fix#45116 Realm-level admininistrators can no longer use Admin Console since 26.3.0 (UI fails to render) admin/ui
fix#45185 ExternalLinkTest fails due to missing _adding_context_for_log_messages anchor docs
fix#45226 Failure when decrypting SAML Response since 26.5.0 saml
fix#45239 Upgrade to 26.5.0 failing due to FK_ORG_INVITATION_ORG constraint organizations
fix#45257 Creating IdentityProvider with latest java admin-client may fail against Keycloak server 26.4 or older admin/client-java
fix#45307 UI Bug: WebAuthn passkey list is broken in keycloak v2 theme login/ui
featureWorkflows to automate administrative tasks and process within a realm.
featureJWT Authorization Grants, our recommended alternative to external to internal token exchange.
featureGuide for using Keycloak as an authorization server for Model Context Protocol (MCP) servers.
featureAuthenticating clients with Kubernetes service account tokens to avoid static client secrets.
featureOpenTelemetry support for metrics and logging, combining all observability information in this popular standard.
featureView all sent invitations with their current status (Pending, Expired)
featureResend pending invitations to recipients
featureDelete invitation records from the system
featureFilter invitations by status for easier management
deprecated#44121 Deprecate Fine-Grained Admin Permissions v1 admin/fine-grained-permissions
breaking#42905 Remove PostgreSQL 13.x support
feature#20761 Support Caddy as a Reverse Proxy Provider for Client Certificate Authentication core
feature#37704 Support for running Keycloak as a Windows Service
feature#38809 Feature Request: Track Pending Organization Invitations in Keycloak Admin Console
feature#39221 Admin API v2: Blueprint
feature#41261 OpenTelemetry Support observability
feature#42482 Possibility to backchannel logout the clients belonging to a specific user session
feature#42912 Containers for ppc64le
feature#43020 Secure Client-Initiated Renegotiation - disable by default dist/quarkus
feature#43106 Expose scheduled tasks and start time
feature#44312 Add support to use `kcw` with remote test server test-framework
feature#44458 Expose a configuration option to always display a logout confirmation screen
feature#8863 Add CORS support to OIDC dynamic client registration endpoints
feature#10388 Allow to hide client scopes from scopes_supported in discovery endpoint
feature#12682 Allow CORS Access-Control-Allow-Headers customization core
feature#14509 Allow configuration for SMTP timeouts via configuration
feature#15502 Ability to remove offline_access tokens from the Account Management client and/or Admin interface core
feature#17268 [KC 20+] Obsolete/wrong documentation about service accounts?
feature#22938 Fine-grained admin permission client manage does not work for an Authorization enabled client admin/fine-grained-permissions
feature#33009 Delete Client and role's admin event doesn't have representation while other delete entities have the representation admin/ui
feature#33146 Prevent users configuring max-count=-1 for caches with a default upper-bound infinispan
feature#35836 SMTP Timeout Override
feature#38843 Set `automountServiceAccountToken: false` on Keycloak pods operator
feature#39881 Picture of the token-exchange flow in the documentation docs
feature#40799 Provide a way to add custom labels to Realm Import job of Keycloak operator
feature#41006 [OTel] Micrometer to OpenTelemetry bridge support for metrics observability
feature#41007 Including OTLP headers for authorization
feature#41019 Validate client session session timeout and lifetime settings on edit authentication
feature#41205 Make MDC logging supported
feature#41263 [OTel] Provide general options for telemetry settings observability
+302 more items in the release notesfeature#43156 [Docs] Warn users about printing headers in HTTP access logs docs
feature#43643 Upgrade to Quarkus 3.27.1 dist/quarkus
fix#44438 Intermittent ConcurrentModificationException during SAML initialization causing status code 400 for clients saml
fix#44480 Wrong persistent group permissions when multiple group membership changes happen in the same request core
security#44478 CVE-2025-13467 Deserialization of untrusted data in ldap user federation
fix#43323 Sessions not removed when user is deleted infinispan
fix#43738 UPDATE_EMAIL action invalidates old email login/ui
fix#43754 Flaky test: org.keycloak.testsuite.federation.ldap.LDAPProvidersIntegrationTest#updateLDAPUsernameTest ci
fix#43812 Admin console sends non-JSON payload with content-type: application/json admin/ui
fix#44125 Double-encoding of query parameter values (e.g. acr_values) for version 26.4 identity-brokering
fix#44187 [Keycloak Docs CI] Broken links docs
fix#44189 [jdbc-ping] SQLIntegrityConstraintViolationException: Duplicate entry infinispan
fix#44229 Unexpected FORMAT_FAILURE error when using cache-config-file with feature-disabled=persistent-user-sessions infinispan
fix#44269 Admin Client creates malformed paths for requests admin/client-js
fix#44287 Caching of static theme resources in dev mode is disabled core