data/reports/GO-2026-5833.yaml

id: GO-2026-5833
modules:
    - module: github.com/mattermost/mattermost-plugin-github
      versions:
        - fixed: 1.0.1-0.20260330164815-c2840e980b3c
      vulnerable_at: 1.0.0
    - 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 validate user-supplied input in API request handlers in github.com/mattermost/mattermost-plugin-github
cves:
    - CVE-2026-4646
ghsas:
    - GHSA-rmvv-8v8w-rf7x
references:
    - advisory: https://github.com/advisories/GHSA-rmvv-8v8w-rf7x
    - advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-4646
    - fix: https://github.com/mattermost/mattermost-plugin-github/commit/c2840e980b3c2bd08db656eaa6a0fe26bcbf4695
    - web: https://mattermost.com/security-updates
source:
    id: GHSA-rmvv-8v8w-rf7x
    created: 2026-07-06T18:13:28.365929502-04:00
review_status: UNREVIEWED