Vulnerability · Published Jul 12, 2026 · Assigned by VulnCheck
CVE-2026-56336Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint
Medium 5.3
In plain English
A medium-severity information exposure in Capgo from Capgo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 72.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Capgo before 12.128.2 contains an information disclosure vulnerability in the unauthenticated /private/sso/check-domain endpoint that returns internal org_id and provider_id values. Attackers can enumerate email domains to build mappings of domains to organization UUIDs and SSO provider identifiers, enabling reconnaissance against Capgo tenants.
Affected products (as reported)
Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- GitHub Security Advisory (GHSA-c5jf-5wxg-mgrq) vendor-advisory
- VulnCheck Advisory: Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint third-party-advisory