Go/github.com/mattermost/mattermost/server/v8 CVE-2026-3114: medium 6.5, EPSS 0.36%
Mattermost doesn't validate decompressed archive entry sizes during file extraction in github.com/mattermost/mattermost-server
Action: Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260217110922-b7d4a1f1f59b or later.
go get github.com/mattermost/mattermost/server/v8@v8.0.0-20260217110922-b7d4a1f1f59bAffected
| introduced | fixed | last affected |
|---|---|---|
| 8.0.0-20260105080200-d27a2195068d | 8.0.0-20260217110922-b7d4a1f1f59b | - |
Fixed versions
| 8.0.0-20260217110922-b7d4a1f1f59b |
Sources
- osv: GO-2026-5663#Go/github.com/mattermost/mattermost/server/v8
- nvd: CVE-2026-3114
- https://github.com/advisories/GHSA-vhgh-g7x8-4rx8
- https://mattermost.com/security-updates
CVE-2026-3114 · published · modified · JSON