Vulnerability DatabaseCVE-2025-55074
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CVE-2025-55074
November 18, 2025
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects
Affected Packages
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.11.0 <v10.11.4
Fix Suggestion:
Update to version v10.11.4
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.5.0 <v10.5.12
Fix Suggestion:
Update to version v10.5.12
Related Resources (9)
https://github.com/mattermost/mattermost/pull/33835
https://github.com/mattermost/mattermost/pull/33905
https://github.com/mattermost/mattermost/commit/d72d437f1567ba0b639b6e4fd73bab06c51baab5
https://nvd.nist.gov/vuln/detail/CVE-2025-55074
https://github.com/mattermost/mattermost/commit/ba86dfc5876b354b9d3c20ff45c08ca6f8426149
https://github.com/mattermost/mattermost/commit/98acefe911dd9de7edf47a7d825dd99f53141a52
https://github.com/advisories/GHSA-9hh7-6558-qfp2
https://github.com/mattermost/mattermost
https://mattermost.com/security-updates
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CVSS v4
Base Score:
2.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Incorrect Default Permissions
CWE-276
Improper Validation of Generative AI Output
CWE-1426
EPSS
Base Score:
0.03