CVE-2026-2461 - Vulnerability Analysis

Overview

Mattermost Plugins <=11.3, 11.0.3, 11.2.2, 10.10.11.0 contain a broken access control vulnerability caused by missing authorization checks on comment block modifications, letting authorized editors modify others' comments, exploit requires editor permission.

Severity & Score

Impact

Authorized editors can modify comments created by other board members, potentially leading to data tampering and trust issues.

Mitigation

Update to a version later than 11.3, 11.0.3, 11.2.2, or 10.10.11.0.

References

• https://mattermost.com/security-updates

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner