What’s Vulnerable › Vulnerabilities

CVE-2026-56318: Capgo - Information Disclosure via /private/validate_password_compliance Endpoint

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-30 · updated 2026-07-01
• Weakness: CWE-200

Description

Capgo before 12.128.2 contains an information disclosure vulnerability in the /private/validate_password_compliance endpoint that returns different error responses for malformed, non-existent, and existing organization IDs. Unauthenticated attackers can enumerate valid organization UUIDs by observing response status codes and error messages, allowing confirmation of organization existence.

Affected products

• Capgo: before 12.128.2 — fixed in 12.128.2

How to fix

Upgrade to a fixed version: Capgo 12.128.2. Check the vendor advisory for mitigations.

References

• https://github.com/Cap-go/capgo/security/advisories/GHSA-fwwh-rqv7-6pjf
• https://www.vulncheck.com/advisories/capgo-information-disclosure-via-private-validate-password-compliance-endpoint
• https://github.com/Cap-go/capgo/security/advisories/GHSA-fwwh-rqv7-6pjf

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