GitHub Advisoryadvisory · Go

GHSA-9hh7-6558-qfp2 Mattermost allows other users to determine when users had read channels via channel member objects

LOW Published 2025-11-18 Modified 2025-11-27 Official page ↗
Aliases
CVE-2025-55074
Ecosystem
Go
Packages
github.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v8
Severity
Low
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
Weaknesses
CWE-276
Reviewed
2025-11-18

Affected packages

• Go github.com/mattermost/mattermost-server: >= 10.11.0, < 10.11.4 → fixed in 10.11.4 • Go github.com/mattermost/mattermost-server: >= 10.5.0, < 10.5.12 → fixed in 10.5.12 • Go github.com/mattermost/mattermost/server/v8: < 8.0.0-20250905150616-ba86dfc5876b6 → fixed in 8.0.0-20250905150616-ba86dfc5876b6

Description

Mattermost versions 10.11.x <= 10.11.3, and 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.

Related

Alias · CVE (1)

  • CVE-2025-55074 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… vulnerability

Weakness · CWE (1)

  • CWE-276 Incorrect Default Permissions weakness

References