Unrated severityNVD Advisory· Published Jun 20, 2026
Capgo - Server-Side Request Forgery via Webhook URL Validation
CVE-2026-56227
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
2- github.com/Cap-go/capgo/security/advisories/GHSA-48hc-53hv-6x3fmitrevendor-advisory
- www.vulncheck.com/advisories/capgo-server-side-request-forgery-via-webhook-url-validationmitrethird-party-advisory
News mentions
1- Capgo: 21 CVEs Disclosed Together — Unauthenticated Cross-Tenant Bugs and Scope Escalation Lead the BatchVypr Intelligence · Jun 20, 2026