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    CVE-2026-56223

    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.

    Published:Jun 24, 2026
    Last Modified:Jun 24, 2026
    EPS:Jun 24, 2026
    EPSS Score:
    CVSS Score:8.7

    Affected Products

    Vendor
    Cap-go
    Product
    Cap-go

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    Related CVEs

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    CVE-2026-56313 (CVSS 7.2) — Capgo before 12.128.2 contains a cross-organization account disruption vulnerability in the SSO prelink endpoi…
    CVE-2026-56308 (CVSS 8.4) — Capgo before 12.128.2 allows email address changes without requiring current password re-authentication or ver…
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    CVE-2026-56252 (CVSS 5.3) — Capgo before 12.128.2 contains a scope isolation vulnerability in the POST /webhooks/test endpoint that allows…
    CVE-2026-56241 (CVSS 7.2) — Capgo before 12.128.2 contains a privilege escalation vulnerability where demoted super_admin users retain acc…
    CVE-2026-56238 (CVSS 8.7) — Capgo before 12.128.2 contains an information disclosure vulnerability in the Supabase PostgREST global_stats …
    CVE-2026-56303 (CVSS 8.7) — Capgo before 12.128.2 contains an information disclosure vulnerability in the find_apikey_by_value PostgreSQL …
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High