Auth bypass in Capgo
CVE-2026-56219
Capgo before 12.128.2 contains a NULL-auth bypass vulnerability in the public.get_org_user_access_rbac function that allows unauthenticated attackers to retrieve RBAC role bindings and member email addresses. Attackers can exploit improper NULL comparison in the authorization gate to disclose organization membership, roles, and email addresses via the PostgREST RPC endpoint using only a public API key.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-vvm7-xhcj-m94h (vendor-advisory)
- www.vulncheck.com/advisories/capgo-unauthenticated-rbac-bindings-and-email-disc… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56219?
- CVE-2026-56219 is a high-severity vulnerability in Capgo, classified under Improper Authentication. CVSS score: 7.5/10. Published 2026-06-30.
- How severe is CVE-2026-56219?
- High severity. CVSS v3 base score is 7.5 out of 10.