VULNERABILITY INTELLIGENCE

CVE-2025-54499

CVSS score3.1 LOW
EPSS probability0.27%
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 use constant-time comparison for sensitive string comparisons which allows attackers to exploit timing oracles to perform byte-by-byte brute force attacks via response time analysis on Cloud API keys and OAuth client secrets

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-208

Primary references