CVE-2025-54499

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
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
3.1 LOW
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
MattermostCNA
3.1 LOW
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA-ADPADP
---
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Base Score
CVSS 3.x
EPSS Score
Percentile: 10%
VendorProductVersion
mattermostmattermost_server
10.5.0 ≤
𝑥
< 10.5.11
mattermostmattermost_server
10.11.0 ≤
𝑥
< 10.11.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://mattermost.com/security-updates