Vulnerability in Capgo
CVE-2026-56327
Capgo before 12.128.2 contains an information disclosure vulnerability in the public.invite_user_to_org RPC function that allows unauthenticated attackers to enumerate organization existence by observing distinct error responses. Attackers can call the SECURITY DEFINER function with a publishable API key to determine if an organization ID exists based on NO_ORG versus NO_RIGHTS responses, enabling tenant enumeration attacks.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (27.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.2% 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-35q8-ghfg-vp6m (vendor-advisory)
- www.vulncheck.com/advisories/capgo-unauthenticated-organization-existence-oracl… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56327?
- CVE-2026-56327 is a medium-severity vulnerability in Capgo, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2026-06-30.
- How severe is CVE-2026-56327?
- Medium severity. CVSS v3 base score is 5.3 out of 10.