CVE-2025-54499CWE-208

CVE-2025-54499

Low · published October 16, 2025

CVSS v3.1
3.1
EPSS
0%
Percentile
18.5
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
3.1 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00272 · 18.5th percentile
Weakness
CWE-208 · Observable Timing Discrepancy
Published
2025-10-16T13:15Z
Affected products (2)
ProductVersionsFixed in
mattermost/mattermost_server≥ 10.5.0, < 10.5.1110.5.11
mattermost/mattermost_server≥ 10.11.0, < 10.11.310.11.3
References (1)
https://mattermost.com/security-updates · [email protected]
EPSS history
Timeline
  • 16 OCT 08:17Z
    Insecure string comparison enables timing attacks
    cvelistv5