CVE-2026-32096 Plunk has SSRF via unvalidated AWS SNS SubscriptionConfirmation in POST /webhooks/sns

Plunk is an open-source email platform built on top of AWS SES. Prior to 0.7.0, a Server-Side Request Forgery SSRF vulnerability existed in the SNS webhook handler. An unauthenticated attacker could send a crafted request that caused the server to make an arbitrary outbound HTTP GET request to an...