Auth bypass in Cap-Go Capgo
CVE-2026-56310
Cap-go before 12.128.2 contains an authorization bypass vulnerability in the GET /organization/members endpoint that allows org-limited API keys to bypass limited_to_orgs restrictions. Attackers with org-limited API keys can read membership data including uid, email, image_url, role, and is_tmp from organizations outside their assigned scope.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cap-Go Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-q7xv-p34q-v365 (vendor-advisory)
- www.vulncheck.com/advisories/cap-go-authorization-bypass-in-organization-member… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56310?
- CVE-2026-56310 is a medium-severity vulnerability in Cap-Go Capgo, classified under Improper Authorization. CVSS score: 4.3/10. Published 2026-06-24.
- How severe is CVE-2026-56310?
- Medium severity. CVSS v3 base score is 4.3 out of 10.