CVE-2026-56227: Capgo

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Capgo before 12.128.2 contains a server-side request forgery vulnerability in webhook URL validation that allows loopback and internal addresses. Organization admins can configure webhooks pointing to localhost or 127.0.0.1, and when triggered, the backend performs outbound requests to these addresses with error responses disclosed to users.

Affected products

• Capgo Capgo: before 12.128.2 (fixed in 12.128.2)

Published 2026-06-20. Last modified 2026-06-22.