Simple Membership, CVE-2026-11855

CVE, Research URL: CVE-2026-11855
Home page URL: Security reports for Simple Membership
Application: Simple Membership
Published on: Jul 06, 2026
Research Description: The Simple Membership WordPress plugin before 4.7.5 does not verify the authenticity of Stripe webhook requests when no signing secret is configured, nor escape a value taken from them before outputting it in an administrator notice, allowing unauthenticated attackers to inject arbitrary web scripts that execute in the context of a logged-in administrator.
Affected versions: max 4.7.5.
Status: vulnerable