{"id":"CVE-2026-81338","state":"PUBLISHED","title":"MasterStudy LMS < 3.7.50 - Subscriber+ Stored HTML Injection via Course Discussions","description":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.50 does not properly sanitise and restrict HTML in user-submitted content before storing it and rendering it to other users, allowing users with subscriber-level accounts and above to perform stored HTML injection, such as embedding iframes, that can be leveraged for phishing and content spoofing against other users viewing the content.","publishedAt":"2026-09-23T06:00:15.761Z","updatedAt":"2026-09-23T10:59:21.227Z","severity":{"score":4.6,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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":"3.7.50","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/e8494c71-fb0f-4ab9-a8b7-8db3745a2d9b/"],"weaknesses":["CWE-345"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/81xxx/CVE-2026-81338.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-81338","state":"PUBLISHED","datePublished":"2026-09-23T06:00:15.761Z","dateUpdated":"2026-09-23T10:59:21.227Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-08-26T18:07:02.182Z"},"containers":{"cna":{"title":"MasterStudy LMS < 3.7.50 - Subscriber+ Stored HTML Injection via Course Discussions","descriptions":[{"lang":"en","value":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.50 does not properly sanitise and restrict HTML in user-submitted content before storing it and rendering it to other users, allowing users with subscriber-level accounts and above to perform stored HTML injection, such as embedding iframes, that can be leveraged for phishing and content spoofing against other users viewing the content."}],"affected":[{"vendor":"Unknown","product":"MasterStudy LMS WordPress Plugin","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.7.50","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/e8494c71-fb0f-4ab9-a8b7-8db3745a2d9b/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-345 Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-09-23T06:00:15.761Z"},"credits":[{"lang":"en","value":"Jaime F. Murillo","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":4.6,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-23T10:46:48.963456Z","id":"CVE-2026-81338","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-345","type":"CWE","lang":"en","description":"CWE-345 Insufficient Verification of Data Authenticity"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-23T10:59:21.227Z"}}]}}}