Go/github.com/mattermost/mattermost-server/v5 CVE-2026-4265: unknown, EPSS 0.38%
Mattermost fails to validate team-specific upload_file permissions 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-2026-4749#Go/github.com/mattermost/mattermost-server/v5
- https://github.com/advisories/GHSA-xpvf-6qcc-9jqc
- https://nvd.nist.gov/vuln/detail/CVE-2026-4265
- https://github.com/mattermost/mattermost/commit/c7f6efdfb035490f494b3177996ee5f4b278c988
- https://mattermost.com/security-updates
CVE-2026-4265 · published · modified · JSON