Security Advisory
CVE-2025-54499
3.1
LOW
Vulnerability 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
Published Date
October 16, 2025
Official Source
NIST NVD Advisory