Auth bypass in Capgo
CVE-2026-56222
Capgo before 12.128.2 contains an authorization bypass vulnerability in POST /private/role_bindings that fails to verify app_id ownership during app-scoped role binding creation. An attacker with administrative privileges in one organization can create role bindings targeting applications owned by other organizations, enabling unauthorized read and modification of victim applications.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (43.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-5r52-m8r9-7f8x (vendor-advisory)
- www.vulncheck.com/advisories/capgo-cross-organization-app-takeover-via-mismatch… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56222?
- CVE-2026-56222 is a high-severity vulnerability in Capgo, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.2/10. Published 2026-06-23.
- How severe is CVE-2026-56222?
- High severity. CVSS v3 base score is 7.2 out of 10.