CVE-2026-27737
MEDIUM
6,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none
Description
AI Translation Available
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.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0003
Percentile
0,1th
Updated
EPSS Score Trend (Last 2 Days)
79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
StableCommon Consequences
Security Scopes Affected:
Access Control
Confidentiality
Integrity
Availability
Potential Impacts:
Bypass Protection Mechanism
Read Application Data
Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies:
AI/ML, Web Based, Web Server
https://github.com/bigbluebutton/bbb-playback/commit/09e89bfe4ff8488b68c3ff040d…
https://github.com/bigbluebutton/bigbluebutton/commit/69f45aa1b963dc7d80179d015…
https://github.com/bigbluebutton/bigbluebutton/releases/tag/v3.0.19
https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-8vv7-vj…
https://github.com/blindsidenetworks/scalelite/releases/tag/v1.7.0