CVE-2026-27737

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...

CVE-2026-27737

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...

CVE-2026-27737

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...

CVE-2026-27737

CVE-2026-27737 affects BigBlueButton prior to version 3.0.19 . The issue arises in the recording playback (presentation format) where user input in the public chat was not sanitized, enabling a targeted XSS attack when replaying the recording. Root cause: missing input sanitization in the bbb-pla...

PT-2026-41738

Name of the Vulnerable Software and Affected Versions BigBlueButton versions prior to 3.0.19 Description Recording playback in presentation format fails to sanitize user input within the public chat. This allows a malicious actor to execute a targeted Cross-Site Scripting XSS attack—a technique...