CVE-2026-11855 — Simple Membership < 4.7.5 - Unauthenticated Stored XSS via Stripe Webhook API Version

CVE-2026-11855

Simple Membership < 4.7.5 - Unauthenticated Stored XSS via Stripe Webhook API Version PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Unknown / Simple Membership	affected 0 before 4.7.5

CWE

No CWE identifiers supplied.

References

https://wpscan.com/vulnerability/217cb606-a0f2-4427-9262-cfe1cc90474e/

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.