~ / search / GHSA-xr3w-rmvj-f6m7

GHSA-xr3w-rmvj-f6m7

Mattermost has an Observable Timing Discrepancy vulnerability

Source: GitHub Advisory Database (reviewed) Low CVE-2025-54499

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost/server/v8 < 8.0.0-20250728063359-38208b8f065f 8.0.0-20250728063359-38208b8f065f
Go github.com/mattermost/mattermost-server >= 10.5.0, < 10.5.11 10.5.11
Go github.com/mattermost/mattermost-server >= 10.11.0, < 10.11.3 10.11.3

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.