{"id":"CVE-2026-81026","state":"PUBLISHED","title":"MasterStudy LMS < 3.7.40 - Unauthenticated Payment Bypass via PayPal IPN","description":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.40 does not verify the amount, receiver, currency or status of a payment notification before marking the corresponding order completed, allowing unauthenticated users to complete full-price orders and gain access to paid content by paying only a token amount.","publishedAt":"2026-08-29T06:00:23.592Z","updatedAt":"2026-08-30T00:56:50.594Z","severity":{"score":4.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","source":"CISA-ADP"},"assigner":"WPScan","products":["Unknown MasterStudy LMS WordPress Plugin"],"affected":[{"vendor":"Unknown","product":"MasterStudy LMS WordPress Plugin","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.7.40","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/6677b55c-5d51-4849-ac67-849a500aefe2/"],"weaknesses":["CWE-284"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/81xxx/CVE-2026-81026.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-81026","state":"PUBLISHED","datePublished":"2026-08-29T06:00:23.592Z","dateUpdated":"2026-08-30T00:56:50.594Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-08-26T15:19:45.263Z"},"containers":{"cna":{"title":"MasterStudy LMS < 3.7.40 - Unauthenticated Payment Bypass via PayPal IPN","descriptions":[{"lang":"en","value":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.40 does not verify the amount, receiver, currency or status of a payment notification before marking the corresponding order completed, allowing unauthenticated users to complete full-price orders and gain access to paid content by paying only a token amount."}],"affected":[{"vendor":"Unknown","product":"MasterStudy LMS WordPress Plugin","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.7.40","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/6677b55c-5d51-4849-ac67-849a500aefe2/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-284 Improper Access Control","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-08-29T06:00:23.592Z"},"credits":[{"lang":"en","value":"Abdullah Kareem","type":"finder"},{"lang":"en","value":"WPScan","type":"coordinator"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"WPScan CVE Generator"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.8,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"id":"CVE-2026-81026","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-08-30T00:49:05.814405Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","lang":"en","type":"CWE","description":"CWE-284 Improper Access Control"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-30T00:56:50.594Z"}}]}}}