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Medium · 5.4 CVE-2026-56227 EUVD-2026-38115GHSA-383x-vh5q-x2q9

Capgo - Server-Side Request Forgery via Webhook URL Validation

Published Jun 20, 2026 · Updated Nov 8, 2026 · Assigned by VulnCheck

Description

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

VendorProductAffectedFixed
Capgo Capgo < 12.128.2 12.128.2

References