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    CVE-2026-56339

    Capgo (Cap-go/capgo) before 12.128.2 contains an information disclosure vulnerability in the Supabase PostgREST SECURITY DEFINER RPC function public.rescind_invitation that allows unauthenticated attackers to enumerate organization existence. The function returns distinct error messages (NO_ORG vs NO_RIGHTS) when called with only a publishable API key, enabling attackers to discover valid organization IDs and increase the attack surface for targeted phishing or social engineering campaigns.

    Published:Jul 15, 2026
    Last Modified:Jul 30, 2026
    EPS:Jul 15, 2026
    EPSS Score:0.00276
    CVSS Score:7.5

    Affected Products

    Vendor
    Cap-go
    Product
    Cap-go

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-203 Observable Discrepancy

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-189 Black Box Reverse Engineering

    Related CVEs

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    CVE-2026-56281 (CVSS 5.1) — Capgo before 12.128.2 contains a sql injection vulnerability in the POST /private/admin_stats endpoint where t…
    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 …
    CVE-2026-56296 (CVSS 6.9) — Cap-go before 12.128.2 contains an information disclosure vulnerability in the public.transfer_app RPC functio…
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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