CVE-2026-79671

Ech0 before 4.4.3 contains a server-side request forgery vulnerability in the validateWebhookURL function webhooksettingservice.go, which only validates literal IP addresses via net.ParseIP and fails to reject hostnames that DNS-resolve to private or internal IPs e.g., 169.254.169.254.nip.io. An...

CVE-2026-79671: Server-Side Request Forgery (SSRF)

Ech0 before 4.4.3 contains a server-side request forgery vulnerability in the validateWebhookURL function webhooksettingservice.go, which only validates literal IP addresses via net.ParseIP and fails to reject hostnames that DNS-resolve to private or internal IPs e.g., 169.254.169.254.nip.io. An...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the validateWebhookURL function. An administrator can access internal network resources and cloud metadata endpoints by submitting webhook URLs that use hostnames resolving to private IP addresses,...

PT-2026-33901

Summary The validateWebhookURL function in webhook setting service.go attempts to block webhooks targeting private/internal IP addresses, but only checks literal IP strings via net.ParseIP. Hostnames that DNS-resolve to private IPs e.g., 169.254.169.254.nip.io, 10.0.0.1.nip.io bypass all checks,...