Go/github.com/mattermost/mattermost/server/v8 CVE-2026-2456: unknown, EPSS 0.17%
Mattermost fails to limit the size of responses from integration action endpoints in github.com/mattermost/mattermost-server
Action: Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260127165411-fe3052073dc6 or later.
go get github.com/mattermost/mattermost/server/v8@v8.0.0-20260127165411-fe3052073dc6Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 8.0.0-20260127165411-fe3052073dc6 | - |
Fixed versions
| 8.0.0-20260127165411-fe3052073dc6 |
Sources
- osv: GO-2026-4726#Go/github.com/mattermost/mattermost/server/v8
- https://github.com/advisories/GHSA-34g8-9fpp-46ch
- https://nvd.nist.gov/vuln/detail/CVE-2026-2456
- https://github.com/mattermost/mattermost/commit/fe3052073dc67e3c920baf9fe7efd44ac1d8124c
- https://mattermost.com/security-updates
CVE-2026-2456 · published · modified · JSON