VULNERABILITY INTELLIGENCE

CVE-2025-27936

CVSS score5.3 MEDIUM
EPSS probability0.34%
CISA KEVNot currently listed
Published2025-04-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Description

Mattermost Plugin MSTeams versions <2.1.0 and Mattermost Server versions 10.5.x <=10.5.1 with the MS Teams plugin enabled fail to perform constant time comparison on a MSTeams plugin webhook secret which allows an attacker to retrieve the webhook secret of the MSTeams plugin via a timing attack during webhook secret comparison.

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-208

Primary references