Go/github.com/mattermost/mattermost-server/v6 CVE-2026-2456: medium 5.7, EPSS 0.17%
Mattermost fails to limit the size of responses from integration action endpoints 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-2026-4726#Go/github.com/mattermost/mattermost-server/v6
- nvd: CVE-2026-2456
- https://github.com/advisories/GHSA-34g8-9fpp-46ch
- https://github.com/mattermost/mattermost/commit/fe3052073dc67e3c920baf9fe7efd44ac1d8124c
- https://mattermost.com/security-updates
CVE-2026-2456 · published · modified · JSON