CVE-2026-56336
MEDIUMCapgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-c5jf-5wxg-mgrq)
https://github.com/Cap-go/capgo/security/advisories/GHSA-c5jf-5wxg-mgrq
Third Party Advisory third-party-advisory
VulnCheck Advisory: Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint
https://www.vulncheck.com/advisories/capgo-information-disclosure-via-unauthenticated-sso-check-domain-endpoint
Scores
CVSS v3
5.3
EPSS
0.0021
EPSS Percentile
10.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-200
Status
published
Products (2)
Capgo/Capgo
< 12.128.2
Capgo/Capgo
12.128.2
Published
Jul 12, 2026
Tracked Since
Jul 12, 2026