GHSA-MQPR-49JJ-32RC n8n: Webhook Forgery on Github Webhook Trigger

Impact An attacker who knows the webhook URL of a workflow using the GitHub Webhook Trigger node could send unsigned POST requests and trigger the workflow with arbitrary data. The node did not implement the HMAC-SHA256 signature verification that GitHub provides to authenticate webhook deliverie...

PT-2026-51415

Name of the Vulnerable Software and Affected Versions n8n versions prior to 1.123.15 n8n versions prior to 2.5.0 Description The GitHub Webhook Trigger node fails to implement HMAC-SHA256 signature verification, which is a mechanism used to authenticate that a webhook delivery actually comes from...

CVE-2026-1461 Simple Membership <= 4.7.0 - Unauthenticated Improper Handling of Missing Values

The Simple Membership plugin for WordPress is vulnerable to Improper Handling of Missing Values in all versions up to, and including, 4.7.0 via the Stripe webhook handler. This is due to the plugin only validating webhook signatures when the stripe-webhook-signing-secret setting is configured,...

PT-2026-20777

The Simple Membership plugin for WordPress is vulnerable to Improper Handling of Missing Values in all versions up to, and including, 4.7.0 via the Stripe webhook handler. This is due to the plugin only validating webhook signatures when the stripe-webhook-signing-secret setting is configured,...