VDB
GO-2025-4168
GO-2025-4168
PUBLISHED
CVSS 9.300000190734863 CRITICAL
Mattermost fails to properly validate OAuth state tokens during OpenID Connect authentication in github.com/mattermost/mattermost-server
Risk Scores
CVSS v4.0
9.300000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| github.com | mattermost/mattermost/server/v8 | 0, 0 |
| github.com | mattermost/mattermost-server/v5 | 0, 0 |
| github.com | mattermost/mattermost-server/v6 | 0, 0 |
| github.com | mattermost/mattermost-server | 0, 0 |
Timeline
- Dec 15, 2025 CVE Published
- Mar 3, 2026 CVE Updated
- May 1, 2026 Security Advisory
References
- https://github.com/advisories/GHSA-3x39-62h4-f8j6 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-12419 advisory
- https://github.com/mattermost/mattermost/commit/15364790cc277cfaa372693d2d5442b87f70fd42 url
- https://github.com/mattermost/mattermost/commit/364c2203de00fe0d8424b6b46d6f0eeb02a2539a url
- https://github.com/mattermost/mattermost/commit/46b5c436bb3093cc1da3fa2455f93d4c52389eee url
- https://github.com/mattermost/mattermost/commit/c3f4818afe46a7084740e809708ae22641c76d8d url
- https://github.com/mattermost/mattermost/commit/d3ed703dc8330684952eb8d49a375bac6ea7b0c6 url
- https://github.com/mattermost/mattermost/pull/34296 url
- https://mattermost.com/security-updates url