Mattermost fails to to verify the token used during code exchange in github.com/mattermost/mattermost-server
Mattermost fails to to verify the token used during code exchange in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/mattermost/mattermost-server from v10.5.0 before v10.5.13, from v10.11.0 before v10.11.5, from v10.12.0 before v10.12.2, from v11.0.0 before v11.0.3.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-12421US | — | — | ||
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to to verify that the token used during the code exchange originates from the s… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/advisories/GHSA-mp6x-97xj-9x62ADVISORY
- https://github.com/mattermost/mattermost/commit/5072bbf689a46b3b97b2373f26149f5891396e6bWEB
- https://github.com/mattermost/mattermost/commit/acda1fb5dd46a2f46c76ae67012423c760525eaaWEB
- https://github.com/mattermost/mattermost/commit/f361e7d75a7ab9df5a2106e1ceb919b94b55e41dWEB
- https://github.com/mattermost/mattermost/commit/feb598ed2b7ac3cb78a253b032ad7e4628b0de00WEB
- https://mattermost.com/security-updatesWEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-12421ADVISORY
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