id: GO-2025-3556
modules:
    - module: github.com/mattermost/mattermost-server
      versions:
        - introduced: 9.11.0+incompatible
        - fixed: 9.11.9+incompatible
        - introduced: 10.3.0+incompatible
        - fixed: 10.3.4+incompatible
        - introduced: 10.4.0+incompatible
        - fixed: 10.4.3+incompatible
      vulnerable_at: 10.4.3-rc3+incompatible
    - module: github.com/mattermost/mattermost-server/v5
      vulnerable_at: 5.39.3
    - module: github.com/mattermost/mattermost-server/v6
      vulnerable_at: 6.7.2
    - module: github.com/mattermost/mattermost/server/v8
      versions:
        - fixed: 8.0.0-20250218135018-e644e3c8e393
summary: |-
    Mattermost allows members with permission to convert public channels to private
    and convert private to public in github.com/mattermost/mattermost-server
cves:
    - CVE-2025-27933
ghsas:
    - GHSA-h5v9-xw2g-7hrq
references:
    - advisory: https://github.com/advisories/GHSA-h5v9-xw2g-7hrq
    - advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-27933
    - web: https://mattermost.com/security-updates
notes:
    - fix: 'github.com/mattermost/mattermost/server/v8: could not add vulnerable_at: could not find tagged version between introduced and fixed'
source:
    id: GHSA-h5v9-xw2g-7hrq
    created: 2025-03-25T12:05:41.487983-04:00
review_status: UNREVIEWED