{"api_version":"1","generated_at":"2026-09-13T12:36:57+00:00","cve":"CVE-2026-88764","urls":{"html":"https://cve.report/CVE-2026-88764","api":"https://cve.report/api/cve/CVE-2026-88764.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-88764","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-88764"},"summary":{"title":"Simple Membership < 4.7.8 - Subscriber+ Membership Level Escalation via PayPal Standard subsc_ref","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.","state":"PUBLISHED","assigner":"WPScan","published_at":"2026-09-13 06:16:25","updated_at":"2026-09-13 11:16:59"},"problem_types":["CWE-269","CWE-269 Improper Privilege Management","CWE-269 CWE-269 Improper Privilege Management"],"metrics":[{"version":"3.1","source":"ADP","type":"DECLARED","score":"5.4","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}},{"version":"3.1","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","score":"5.4","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"}}],"references":[{"url":"https://wpscan.com/vulnerability/54fdf46e-0385-40a3-b3bc-a862dc0fb03e/","name":"https://wpscan.com/vulnerability/54fdf46e-0385-40a3-b3bc-a862dc0fb03e/","refsource":"contact@wpscan.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88764","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88764","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Unknown","product":"Simple Membership","version":"affected 4.7.8 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Charles Vosburgh","lang":"en"},{"source":"CNA","value":"WPScan","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-88764","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-13T10:42:12.856460Z","version":"2.0.3"},"type":"ssvc"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","description":"CWE-269 Improper Privilege Management","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-13T10:44:51.651Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Simple Membership","vendor":"Unknown","versions":[{"lessThan":"4.7.8","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Charles Vosburgh"},{"lang":"en","type":"coordinator","value":"WPScan"}],"descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"description":"CWE-269 Improper Privilege Management","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-13T06:00:08.690Z","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","shortName":"WPScan"},"references":[{"tags":["exploit","vdb-entry","technical-description"],"url":"https://wpscan.com/vulnerability/54fdf46e-0385-40a3-b3bc-a862dc0fb03e/"}],"source":{"discovery":"EXTERNAL"},"title":"Simple Membership < 4.7.8 - Subscriber+ Membership Level Escalation via PayPal Standard subsc_ref","x_generator":{"engine":"WPScan CVE Generator"}}},"cveMetadata":{"assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","assignerShortName":"WPScan","cveId":"CVE-2026-88764","datePublished":"2026-09-13T06:00:08.690Z","dateReserved":"2026-09-10T06:55:42.278Z","dateUpdated":"2026-09-13T10:44:51.651Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-13 06:16:25","lastModifiedDate":"2026-09-13 11:16:59","problem_types":["CWE-269","CWE-269 Improper Privilege Management","CWE-269 CWE-269 Improper Privilege Management"],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.5}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-13T10:42:12.856460Z","id":"CVE-2026-88764","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"88764","Ordinal":"1","Title":"Simple Membership < 4.7.8 - Subscriber+ Membership Level Escalat","CVE":"CVE-2026-88764","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"88764","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Simple Membership < 4.7.8 - Subscriber+ Membership Level Escalat"}]}}}