CVE-2026-56336 Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint
Attackers can enumerate email domains to retrieve internal organization and SSO provider IDs via an unauthenticated endpoint, facilitating reconnaissance.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56336?
CVE-2026-56336 is a medium-severity vulnerability in Capgo, published on 12 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-200
Which versions are affected by CVE-2026-56336?
How do I fix CVE-2026-56336?
No fix has been published for CVE-2026-56336 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-56336 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-56336 exists.
Sources
Also known as GHSA-c5jf-5wxg-mgrq, GHSA-g3p6-j9ww-hmwc.