VULNERABILITY INTELLIGENCE

CVE-2025-10545

CVSS score3.1 LOW
EPSS probability0.33%
CISA KEVNot currently listed
Published2025-10-16
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Description

Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when adding channel members which allows guest users to add any team members to their private channels via the `/api/v4/channels/{channel_id}/members` endpoint

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-863

Primary references