VULNERABILITY INTELLIGENCE

CVE-2025-14350

CVSS score4.3 MEDIUM
EPSS probability0.19%
CISA KEVNot currently listed
Published2026-02-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Description

Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to properly validate team membership when processing channel mentions which allows authenticated users to determine the existence of teams and their URL names via posting channel shortlinks and observing the channel_mentions property in the API response. Mattermost Advisory ID: MMSA-2025-00563

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-862

Primary references