CVE-2026-56336

Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint

State: Published
Severity: 6.9 Medium
Published: Jul 12, 2026
Updated: Sep 17, 2026
Reserved: Jun 20, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	VulnCheck

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
CapgoCapgo	before 12.128.2Affected 12.128.2Not affected

References

GitHub Security Advisory (GHSA-c5jf-5wxg-mgrq)vendor-advisory
VulnCheck Advisory: Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpointthird-party-advisory

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