BigBlueButton Greenlight 2.11.1 allows XSS.
Priority LOW 26CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
BigBlueButton Greenlight 2.11.1 allows XSS. A threat actor could have a username containing a JavaScript payload. The payload gets executed in the browser of the victim in the "Share room access" dialog if the victim has shared access to the particular room with the attacker previously.
Why it matters now
EPSS 0.00858 58th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:bigbluebutton:greenlight:2.11.1:*:*:*:*:*:*:* | 2.11.1 | Vulnerable | bigbluebutton |
- cpe:2.3:a:bigbluebutton:greenlight:2.11.1:*:*:*:*:*:*:* Versions 2.11.1 Vulnerable ·bigbluebutton
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-26497
- 2026-10-03 Alias added: GHSA-w3cv-3c36-h8j2
References
More bigbluebutton Greenlight vulnerabilities
- TI-2022-16454 BigBlueButton Greenlight Open Redirect vulnerability CVSS 3.1CRITICAL 9.1
- TI-2022-16453 BigBlueButton Greenlight Open Redirect vulnerability CVSS 3.1CRITICAL 9.1
- TI-2020-15996 BigBlueButton Greenlight before 2.5.6 allows HTTP header (Host and Origin) attacks, which… CVSS 3.1HIGH 8.8
- TI-2020-16758 A cross-site scripting (XSS) vulnerability exists in the 'merge account' functionality in… CVSS 3.1MEDIUM 6.1
- TI-2022-13084 Improper privilege management - Anyone can view room settings in GreenLight CVSS 3.1MEDIUM 5.3
Sources
- CVE-2022-26497 · CVE Program
- CVE-2022-26497 · NVD
- FIRST EPSS
- GHSA-w3cv-3c36-h8j2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences