Go/github.com/mattermost/mattermost-server CVE-2026-6334: unknown, EPSS 0.12%
Mattermost doesn't enforce client identity binding during the OAuth authorization code redemption flow in github.com/mattermost/mattermost-server
Action: Upgrade github.com/mattermost/mattermost-server to 10.11.14+incompatible or later.
go get github.com/mattermost/mattermost-server@v10.11.14+incompatiblego get github.com/mattermost/mattermost-server@v11.5.2+incompatibleAffected
| introduced | fixed | last affected |
|---|---|---|
| 10.11.0+incompatible | 10.11.14+incompatible | - |
| 11.5.0+incompatible | 11.5.2+incompatible | - |
Fixed versions
| 10.11.14+incompatible | 11.5.2+incompatible |
Sources
- osv: GO-2026-5474
- https://github.com/advisories/GHSA-jp3f-x449-4q75
- https://nvd.nist.gov/vuln/detail/CVE-2026-6334
- https://github.com/mattermost/mattermost/commit/e9ae890a013bb57989fcbdb548d8b7b86b240237
- https://mattermost.com/security-updates
CVE-2026-6334 · published · modified · JSON