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CVE-2026-27737

MEDIUM CVSS: 6.5 Published: 2026-05-18 Modified: 2026-07-24

Description

BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.19, the recording playback (presentation format) was not sanitizing user's input in public chat. This allowed for a malicious actor to craft and carry out a targeted XSS attack, activated on anyone replaying the recording. This issue has been fixed 3.0.19.

Affected Platforms

Unknown

Weakness Type

CWE-79

References