Go/github.com/mattermost/mattermost-server CVE-2026-3495: low 3.8, EPSS 0.14%
Mattermost doesn't escape some variables that could contain malicious content during error page composition
Action: Upgrade github.com/mattermost/mattermost-server to 5.3.2-0.20260310115442-5a1ea95044dc or later.
go get github.com/mattermost/mattermost-server@v5.3.2-0.20260310115442-5a1ea95044dcAffected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 5.3.2-0.20260310115442-5a1ea95044dc | - |
Fixed versions
| 5.3.2-0.20260310115442-5a1ea95044dc |
Sources
- osv: GHSA-jx93-pf6x-874r#Go/github.com/mattermost/mattermost-server
- https://nvd.nist.gov/vuln/detail/CVE-2026-3495
- https://github.com/mattermost/mattermost/commit/5a1ea95044dc2d1ca601bfe9a4c1bc17990f3872
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
CVE-2026-3495 · published · modified · JSON