CVE-2026-56336

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.

CVSS Vector

References

• https://github.com/Cap-go/capgo/security/advisories/GHSA-c5jf-5wxg-mgrq
• https://www.vulncheck.com/advisories/capgo-information-disclosure-via-unauthenticated-sso-check-domain-endpoint