Go/github.com/mattermost/mattermost-server/v5 CVE-2026-6340: unknown, EPSS 0.24%
Mattermost doesn't validate 7zip archive structure before processing in github.com/mattermost/mattermost-server
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | - |
Fixed versions
No fixed version in the source.
Sources
- osv: GO-2026-5325#Go/github.com/mattermost/mattermost-server/v5
- https://github.com/advisories/GHSA-cjm8-jxpw-g43m
- https://nvd.nist.gov/vuln/detail/CVE-2026-6340
- https://github.com/mattermost/mattermost/commit/fb11968f8798925c7b75711025bc5f991124ba26
- https://mattermost.com/security-updates
CVE-2026-6340 · published · modified · JSON