data/reports/GO-2026-5918.yaml

id: GO-2026-5918
modules:
    - module: github.com/coder/coder
      vulnerable_at: 0.27.3
    - module: github.com/coder/coder/v2
      versions:
        - fixed: 2.29.17
        - introduced: 2.30.0
        - fixed: 2.32.7
        - introduced: 2.33.0
        - fixed: 2.33.8
        - introduced: 2.34.0
        - fixed: 2.34.2
      vulnerable_at: 2.34.1
summary: |-
    Coder's workspace app CORS origin check can be bypassed via UUID-based subdomain
    spoofing in github.com/coder/coder
cves:
    - CVE-2026-55438
ghsas:
    - GHSA-5wg6-jmq2-53pw
references:
    - advisory: https://github.com/coder/coder/security/advisories/GHSA-5wg6-jmq2-53pw
    - fix: https://github.com/coder/coder/pull/26085
    - fix: https://github.com/coder/coder/pull/26086
source:
    id: GHSA-5wg6-jmq2-53pw
    created: 2026-07-07T00:10:23.631851867-04:00
review_status: UNREVIEWED