23 Oct 2026 15:48:27 UTC
Capgo - Account Takeover via Cross-Domain SSO Email Assertion in provision-user
cve-program · CVE-2026-56223 · Published
CVE-2026-56223
Capgo - Account Takeover via Cross-Domain SSO Email Assertion in provision-user
CVSS 4.0 9.3 CRITICALCVSS 3.1 8.7 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-56223
PublishedCapgo before 12.128.2 contains a cross-domain SSO account takeover vulnerability in the provision-user endpoint that allows attackers to merge arbitrary victim accounts based on email match without validating SSO provider domain authorization. An attacker with enterprise org admin access and a malicious IdP can forge SAML assertions containing victim email addresses to trigger account merge and gain full access to victim accounts, organizations, and data.
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