CVE-2026-11855

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.

PUBLISHED Reserved 2026-06-10 | Published 2026-07-06 | Updated 2026-07-06 | Assigner WPScan

Problem types

CWE-79 Cross-Site Scripting (XSS)

Product status

Credits

Duy Tran finder

WPScan coordinator

References

wpscan.com/...rability/217cb606-a0f2-4427-9262-cfe1cc90474e/ exploit vdb-entry technical-description

cve.org (CVE-2026-11855)

nvd.nist.gov (CVE-2026-11855)

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