CVE-2026-56227

Capgo - Server-Side Request Forgery via Webhook URL Validation

CVSS 5.3 MEDIUMEPSS 0.2%CWE-918

Vexday Risk Score

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 5.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Ciclo de vida

20 jun 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:L

Produtos afetados

Capgo · Capgo

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Referências

https://github.com/Cap-go/capgo/security/advisories/GHSA-48hc-53hv-6x3f https://www.vulncheck.com/advisories/capgo-server-side-request-forgery-via-webhook-url-validation