Is BigBlueButton 3.0.21 affected?
Jan 29, 2026 · Release notes ↗
26 known vulnerabilities affect 3.0.21 (highest CVSS 10.0).
18 newer releases in its track, up to 3.0.39. What changed up to 3.0.39
A newer release line is out: 4.0.0.
Vulnerabilities affecting 3.0.21
- 10.0
- 9.9 GHSA-h2rp-mcch-vgh9 Stored XSS in annotation through /graphql via GraphQL Mutation "url" fixed in 3.0.29
- 9.8 GHSA-q8vx-4cgc-7w4w Improper Authentication through /api/join via POST parameter "auth" fixed in 3.0.29
- 9.0
- 8.5
- 7.6
- 7.3 GHSA-h6m5-4xgx-pvpp Stored XSS Through an Unvalidated Audio-Caption Locale in the Legacy Recording Player fixed in 3.0.38
- 7.2
- 7.1
- 7.1 CVE-2026-46355 Unauthenticated Session Hijack via Exposed /bigbluebutton/api/handleJoinExistingUser fixed in 3.0.23
- 7.0
- 6.8
- 6.5
- 5.4 GHSA-5p2g-ff34-ghm3 Breakout room access is not revoked after a participant is removed fixed in 3.0.38
- 5.4 GHSA-j43j-jmqf-2fg6 Missing server-side enforcement of the maximum number of custom poll options fixed in 3.0.23
- 5.4 CVE-2026-55491 Stored XSS in Screenshare Recording Playback via Unescaped Meeting Name fixed in 3.0.29
- 5.0 GHSA-rr62-cx93-4fwh Unescaped poll text in presentation export enables SVG injection and server-side request forgery fixed in 3.0.38
- 4.9 CVE-2026-55489 IDOR on BBB through /api/graphql via POST parameter "presentationId" leads to Authentication Bypass fixed in 3.0.29
- 4.3 GHSA-52cv-pvw8-89c6 Hidden user list can be bypassed through voice and reaction data fixed in 3.0.38
- 4.3
- 4.3
- 4.3 GHSA-c4v9-6mvh-px5p Improper enforcement of plugin role restrictions on custom chat messages fixed in 3.0.37
- 4.3
- 4.3 GHSA-9v52-vhvw-4w5c Cross-Meeting Presentation Injection Due to an Unbound Upload Token fixed in 3.0.37
- 4.3 CVE-2026-41126 Open Redirect on bigbluebutton through bigbluebutton/api/join via get-parameter "logoutURL"
- 3.1 GHSA-x795-r9c3-rh9q Whiteboard annotation authorship could be forged by a participant with whiteboard access fixed in 3.0.38
Newer releases
| 3.0.39 | Oct 2, 2026 | 3.0.21 → 3.0.39 |
| 3.0.38 | Oct 1, 2026 | 3.0.21 → 3.0.38 |
| 3.0.37 | Sep 10, 2026 | 3.0.21 → 3.0.37 |
| 3.0.36 | Aug 31, 2026 | 3.0.21 → 3.0.36 |
| 3.0.35 | Aug 13, 2026 | 3.0.21 → 3.0.35 |
| 3.0.34 | Aug 5, 2026 | 3.0.21 → 3.0.34 |
| 3.0.33 | Aug 5, 2026 | 3.0.21 → 3.0.33 |
| 3.0.32 | Jul 2, 2026 | 3.0.21 → 3.0.32 |
| 3.0.31 | Jun 19, 2026 | 3.0.21 → 3.0.31 |
| 3.0.30 | Jun 17, 2026 | 3.0.21 → 3.0.30 |
| 3.0.29 | Jun 12, 2026 | 3.0.21 → 3.0.29 |
| 3.0.28 | May 29, 2026 | 3.0.21 → 3.0.28 |
| 3.0.27 | May 14, 2026 | 3.0.21 → 3.0.27 |
| 3.0.26 | Apr 27, 2026 | 3.0.21 → 3.0.26 |
| 3.0.25 | Apr 17, 2026 | 3.0.21 → 3.0.25 |