Vulnerability Description
Capgo (backend Supabase edge functions) before 12.128.2 does not apply the global authentication middleware to the GET /private/role_bindings/:org_id endpoint, unlike the POST and DELETE role_bindings routes, so unauthenticated requests reach the handler instead of being rejected at the middleware layer. The handler still performs its own authorization check and returns Unauthorized, so no direct data exposure occurs; the flaw is inconsistent authentication enforcement across HTTP methods that could enable authorization bypass if the handler logic changes.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/Cap-go/capgo/security/advisories/GHSA-6c9f-9v99-26ww
- https://www.vulncheck.com/advisories/capgo-missing-authentication-middleware-on-
- https://github.com/Cap-go/capgo/security/advisories/GHSA-6c9f-9v99-26ww
FAQ
What is CVE-2026-56321?
CVE-2026-56321 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Capgo (backend Supabase edge functions) before 12.128.2 does not apply the global authentication middleware to the GET /private/role_bindings/:org_id endpoint, unlike the POST and DELETE role_bindings...
How severe is CVE-2026-56321?
CVE-2026-56321 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56321?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.