GHSA-826h-p4c3-477p
GitHub Security Advisory
Mattermost Race Condition vulnerability
✓ GitHub Reviewed
MODERATE
Has CVE
Advisory Details
Mattermost versions 10.1.x <= 10.1.2, 10.0.x <= 10.0.2, 9.11.x <= 9.11.4, and 9.5.x <= 9.5.12 fail to prevent concurrently checking and updating the failed login attempts. which allows an attacker to bypass of "Max failed attempts" restriction and send a big number of login attempts before being blocked via simultaneously sending multiple login requests
Affected Packages
Go
github.com/mattermost/mattermost/server/v8
Affected versions:
10.1.0
(fixed in 10.1.3)
Go
github.com/mattermost/mattermost/server/v8
Affected versions:
10.0.0
(fixed in 10.0.3)
Go
github.com/mattermost/mattermost/server/v8
Affected versions:
9.11.0
(fixed in 9.11.5)
Go
github.com/mattermost/mattermost/server/v8
Affected versions:
9.5.0
(fixed in 9.5.13)
Related CVEs
Key Information
5.0
/10
Dataset
Last updated: August 1, 2025 6:44 AM
Data from GitHub Advisory Database. This information is provided for research and educational purposes.