{"id":"CVE-2026-82845","state":"PUBLISHED","title":"Masteriyo LMS < 3.4.1 - Subscriber+ PHP Object Injection","description":"The Masteriyo LMS  WordPress plugin before 3.4.1 does not prevent user-supplied values held as metadata from being deserialized when they are read back, allowing users with a minimal account to inject arbitrary PHP objects and, by way of a class shipped in a library bundled with the Masteriyo LMS  WordPress plugin before 3.4.1, write and execute arbitrary code on the server. A weaker form of the same issue is reachable without an account and yields an arbitrary file write rather than code execution.","publishedAt":"2026-09-12T06:00:09.956Z","updatedAt":"2026-09-12T15:33:08.896Z","severity":{"score":9.9,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"WPScan","products":["Unknown Masteriyo LMS"],"affected":[{"vendor":"Unknown","product":"Masteriyo LMS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.4.1","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/5ced30ea-8b78-495f-b10c-42b3f10adcb3/"],"weaknesses":["CWE-502"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/82xxx/CVE-2026-82845.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-82845","state":"PUBLISHED","datePublished":"2026-09-12T06:00:09.956Z","dateUpdated":"2026-09-12T15:33:08.896Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-08-31T08:27:16.968Z"},"containers":{"cna":{"title":"Masteriyo LMS < 3.4.1 - Subscriber+ PHP Object Injection","descriptions":[{"lang":"en","value":"The Masteriyo LMS  WordPress plugin before 3.4.1 does not prevent user-supplied values held as metadata from being deserialized when they are read back, allowing users with a minimal account to inject arbitrary PHP objects and, by way of a class shipped in a library bundled with the Masteriyo LMS  WordPress plugin before 3.4.1, write and execute arbitrary code on the server. A weaker form of the same issue is reachable without an account and yields an arbitrary file write rather than code execution."}],"affected":[{"vendor":"Unknown","product":"Masteriyo LMS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.4.1","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/5ced30ea-8b78-495f-b10c-42b3f10adcb3/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-09-12T06:00:09.956Z"},"credits":[{"lang":"en","value":"Karthik Ramakrishnan","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":"CHANGED","version":"3.1","baseScore":9.9,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-12T15:22:11.992349Z","id":"CVE-2026-82845","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","type":"CWE","lang":"en","description":"CWE-502 Deserialization of Untrusted Data"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-12T15:33:08.896Z"}}]}}}