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TI-2026-40701 Aliases CVE-2026-56336GHSA-g3p6-j9ww-hmwc

Capgo - Information Disclosure via Unauthenticated SSO check-domain Endpoint

Priority HIGH 70CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.

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 of domains to organization UUIDs and SSO provider identifiers, enabling reconnaissance against Capgo tenants.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00343 27th percentileScored 2026-11-07
Fix Fixed Capgo (Capgo): 12.128.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CapgoCapgobefore 12.128.212.128.2Patch availableCNA
  • Capgo VendorCapgo Affected before 12.128.2 Fixed in 12.128.2 Patch available CNA

Remediation

  • Fix · CNA Capgo (Capgo) Fixed in 12.128.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Capgo 12.128.2

    7 records Highest priority Priority HIGH 4 HIGH, 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-40603 Capgo - Unauthenticated Information Disclosure via PostgREST global_stats EndpointPriority HIGH 77
    • TI-2026-40673 Capgo - Insufficient Authentication in Email Change EndpointPriority HIGH 72
    • TI-2026-40606 Capgo - RBAC Demotion Privilege Retention via Stale org_users.user_rightPriority HIGH 65
    Show all 7 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56336
  2. 2026-10-03 Alias added: GHSA-g3p6-j9ww-hmwc

References

Advisory 1

  • TI-2026-40602 Capgo - Unauthenticated API Key Generation via Client-Side Parameter Manipulation CVSS 4.0CRITICAL 9.3
  • TI-2026-40473 Cap-go - Account Lockout via 2FA Misconfiguration on Unverified Email CVSS 4.0CRITICAL 9.3
  • TI-2026-40465 Cap-go - OTP Bypass via Response Manipulation in Email Verification CVSS 4.0CRITICAL 9.3
  • TI-2026-64782 capgo.app through 12.129.0 Cache Restoration of Deleted Bundles CVSS 4.0HIGH 8.7
  • TI-2026-40704 Capgo - Unauthenticated Organization Existence Enumeration via rescind_invitation RPC CVSS 4.0HIGH 8.7
  • TI-2026-40689 Capgo - Rate Limit Bypass via User-Controlled device_id Parameter CVSS 4.0HIGH 8.8
See all 124 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences