| id: GO-2026-5818 |
| modules: |
| - module: github.com/mattermost/mattermost-server |
| versions: |
| - introduced: 10.11.0+incompatible |
| - fixed: 10.11.15+incompatible |
| - introduced: 11.4.0+incompatible |
| - fixed: 11.4.5+incompatible |
| - introduced: 11.5.0+incompatible |
| - fixed: 11.5.4+incompatible |
| - introduced: 11.6.0+incompatible |
| - fixed: 11.6.1+incompatible |
| vulnerable_at: 11.6.1-rc1+incompatible |
| summary: |- |
| Mattermost doesn't sanitize team member data when returned via API to users |
| without elevated permissions in github.com/mattermost/mattermost-server |
| cves: |
| - CVE-2026-3636 |
| ghsas: |
| - GHSA-ffpr-pfr4-g354 |
| references: |
| - advisory: https://github.com/advisories/GHSA-ffpr-pfr4-g354 |
| - advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-3636 |
| - web: https://mattermost.com/security-updates |
| source: |
| id: GHSA-ffpr-pfr4-g354 |
| created: 2026-07-06T18:14:52.242894468-04:00 |
| review_status: UNREVIEWED |
