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CVE PROGRAM SOURCE RECORD9.3 Critical

CVE-2026-56223

Capgo - Account Takeover via Cross-Domain SSO Email Assertion in provision-user

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

Capgo 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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Capgo Capgo

Default version status: unaffected

  • 0 to < 12.128.2affected
  • 12.128.2unaffected
pkg:github/Cap-go/capgo

References