CVE-2025-54499

Insecure string comparison enables timing attacks

State: Published
Severity: 3.1 Low
Published: Oct 16, 2025
Updated: Oct 16, 2025
Reserved: Sep 16, 2025

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

Scores

CVSS	Score	Vector	Source
3.1	3.1 Low	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N	Mattermost

Weaknesses

CWE-208 Observable Timing Discrepancy

Affected Products

Product	Versions
MattermostMattermost	10.5.0 through 10.5.10Affected 10.11.0 through 10.11.2Affected 10.12.0Not affected 10.5.11Not affected 10.11.3Not affected

References

https://mattermost.com/security-updates

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.