EUVD-2026-28832

Plunk is an open-source email platform built on top of AWS SES. Prior to version 0.9.0, the /webhooks/sns endpoint accepts Amazon SNS notification payloads from unauthenticated requests without verifying the SNS signature, certificate, or topic ARN, meaning anyone can forge a valid-looking webhoo...

PT-2026-28704

Name of the Vulnerable Software and Affected Versions Twilio integration affected versions not specified Description The Twilio integration webhook handler improperly validates requests, accepting any POST request without verifying the 'X-Twilio-Signature' header. When handling media messages, th...

PT-2026-22150

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2025.12.2 Discourse versions prior to 2026.1.1 Discourse versions prior to 2026.2.0 Description Discourse is an open source discussion platform. Several webhook endpoints—SendGrid, Mailjet, Mandrill, Postmark,...