CVEvulnerability

CVE-2025-11777

4.3 MEDIUM Published 2025-11-13 Modified 2026-10-19 Official page ↗
Status
Analyzed
Published
2025-11-13
Last modified
2026-10-19
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.1 LOW — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-863

Description

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to properly validate team membership permissions in the Add Channel Member API which allows users from one team to access user metadata and channel membership information from other teams via the API endpoint

Affected configurations

• mattermost mattermost server (>= 10.5.0 < 10.5.12) • mattermost mattermost server (>= 10.11.0 < 10.11.4)

Related

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References