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CVE-2026-88764

MEDIUM 5.4 CVSS 3.1
Published
September 13, 2026
Last modified
September 14, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-269
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Description

The Simple Membership WordPress plugin before 4.7.8 does not validate that the membership level supplied in a PayPal payment notification matches the level configured for the paid payment button, allowing members to pay for a lower-priced membership while being granted a higher, more privileged membership level.

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 4.7.8

References

  • wpscan.com https://wpscan.com/vulnerability/54fdf46e-0385-40a3-b3bc-a862dc0fb03e/
  • nvd.nist.gov Official NVD record