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CVE-2026-11855

HIGH 8.8 CVSS 3.1
Published
July 6, 2026
Last modified
July 6, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown Simple Membership — Before 4.7.5

References

  • wpscan.com https://wpscan.com/vulnerability/217cb606-a0f2-4427-9262-cfe1cc90474e/
  • nvd.nist.gov Official NVD record