CVE-2025-54499 — Insecure string comparison enables timing attacks
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 …
Published: 2025-10-16 · CVSS: 3.1 · CVSS 3.1
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
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7