{"id":"CVE-2026-56336","title":"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","summary":"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…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-200"],"vendor":"Capgo","product":"Capgo","affected":["Capgo < 12.128.2"],"published":"2026-07-12","updated":"2026-09-17","sourceUpdated":"2026-09-17T18:16:50.870","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56336","references":[{"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-c5jf-5wxg-mgrq","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/capgo-information-disclosure-via-unauthenticated-sso-check-domain-endpoint","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-c5jf-5wxg-mgrq","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-07-14T14:10:42.740477Z"},"epss":0.00257,"epssPercentile":0.17634,"ingestedAt":"2026-07-12T12:20:14.038Z","slug":"CVE-2026-56336","body":"## Overview\n\nCapgo 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":206486,"id":"CVE-2026-56336","ts":1789669550394,"field":"exploit_available","old":"false","new":"true"}]}