CVE-2026-116516
MEDIUM
6,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Description
Mattermost versions <=11.9 11.1.9 11.5.8 11.10.7.0 fail to validate Zoom chat line length before slicing which allows an authenticated attacker to crash the Agents plugin via summarizing a Zoom chat transcription containing short continuation lines. Mattermost Advisory ID: MMSA-2026-00723
754
Improper Check for Unusual or Exceptional Conditions
IncompleteCommon Consequences
Security Scopes Affected:
Integrity
Availability
Potential Impacts:
Dos: Crash, Exit, Or Restart
Unexpected State
Applicable Platforms
All platforms may be affected
https://mattermost.com/security-updates