{"id":"CVE-2026-88764","title":"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-price…","summary":"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-price…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-269"],"product":"Simple Membership","affected":["simple_membership < 4.7.8"],"published":"2026-09-13","updated":"2026-09-14","sourceUpdated":"2026-09-14T21:10:17.423","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88764","references":[{"url":"https://wpscan.com/vulnerability/54fdf46e-0385-40a3-b3bc-a862dc0fb03e/","label":"contact@wpscan.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-13T10:42:12.856460Z"},"ingestedAt":"2026-09-14T15:23:07.471Z","epss":0.00138,"epssPercentile":0.03529,"slug":"CVE-2026-88764","body":"## Overview\n\nThe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}