CVEvulnerability

CVE-2025-55073

5.3 MEDIUM Published 2025-11-14 Modified 2026-10-19 Official page ↗
Status
Analyzed
Published
2025-11-14
Last modified
2026-10-19
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-306

Description

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.

Affected configurations

• mattermost mattermost server (>= 10.5.0 < 10.5.12) • mattermost mattermost server (>= 10.11.0 < 10.11.4) • mattermost mattermost server (>= 10.12.0 < 10.12.1)

Related

Weakness · CWE (1)

  • CWE-306 Missing Authentication for Critical Functionality weakness

References