CVE-2025-54499
Low
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
SeverityLow
CVSS3.1
Exploit probability—
Product
Mattermost Server
PublishedOct 16, 2025
First seenOct 16, 2025
Weakness typeCWE-208CWE-208
How to fix
Update
- mattermost mattermost_server10.5.11, 10.11.3 or later
- github.com/mattermost/mattermost/server/v88.0.0-20250728063359-38208b8f065f or later
- github.com/mattermost/mattermost-server10.5.11, 10.11.3, 10.5.11+incompatible, 10.11.3+incompatible or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost_server | 10.5.0 ≤ v < 10.5.11, 10.11.0 ≤ v < 10.11.3 | 10.5.11, 10.11.3 |
| github.com/mattermost/mattermost/server/v8Go | v < 8.0.0-20250728063359-38208b8f065f | 8.0.0-20250728063359-38208b8f065f |
| github.com/mattermost/mattermost-serverGo | 10.5.0 ≤ v < 10.5.11, 10.11.0 ≤ v < 10.11.3, 10.5.0+incompatible ≤ v < 10.5.11+incompatible, 10.11.0+incompatible ≤ v < 10.11.3+incompatible | 10.5.11, 10.11.3, 10.5.11+incompatible, 10.11.3+incompatible |
| github.com/mattermost/mattermost-server/v5Go | No range specified | — |
| github.com/mattermost/mattermost-server/v6Go | No range specified | — |
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