Fix SSRF vulnerability in webhook URLs#1494
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mattwoberts merged 3 commits intogetfider:mainfrom Apr 12, 2026
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Webhook URLs were only validated for format, allowing admins to target internal network addresses (localhost, private IPs, cloud metadata endpoints). Add WebhookURL() validator that resolves hostnames and blocks private/loopback/link-local IP ranges. Applied at both save time and trigger time to cover template-expanded URLs. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
Test plan