PT-2026-79192 · Unknown · Bigbluebutton
CVE-2026-55491
·
Published
2026-08-20
·
Updated
2026-08-21
CVSS v3.1
5.4
Medium
| Vector | AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
BigBlueButton versions prior to 3.0.29
Description
An issue exists where the software fails to escape the
meetingName variable in the record-and-playback/screenshare/playback/index.html.erb file during the generation of the screenshare playback format. This allows a low-privileged user to store a crafted meeting name containing embedded script content, which then executes in the browser of another user when they replay the recording.Recommendations
Update to version 3.0.29.
Exploit
Fix
XSS
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Weakness Enumeration
Related Identifiers
Affected Products
Bigbluebutton