{"schemaVersion":3,"id":"CVE-2026-104392","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Deserialization of Untrusted Data vulnerability in ExpressTech Quiz And Survey Master quiz-master-next allows Object Injection.This issue affects Quiz And Survey Master: from n/a through 11.2.7.","dates":{"published":"2026-10-09T12:08:37.866Z","modified":"2026-10-09T20:01:16.901Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"wordfence","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00288,"percentile":0.20051,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-10T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00288,"percentile":0.20051}],"last30":[{"date":"2026-10-10T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00288,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00288,"percentile":0.20051}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-502","name":"Deserialization of Untrusted Data","description":"The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/502.html"}],"affected":[{"vendor":"expresstech","product":"quiz and survey master","name":"Quiz And Survey Master","label":"quiz and survey master","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 11.2.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 11.2.7","eol":null,"hubHref":"/vendor/expresstech/quiz_and_survey_master"},{"vendor":"wordpress","product":"quiz-master-next","name":"Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker","label":"quiz-master-next","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 11.2.7 (fixed in 11.2.8)","noFixRecorded":false,"fixedIn":"11.2.8"}],"versionsText":"≤ 11.2.7 (fixed in 11.2.8)","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://patchstack.com/database/wordpress/plugin/quiz-master-next/vulnerability/wordpress-quiz-and-survey-master-plugin-11-2-7-php-object-injection-vulnerability?_s_id=cve","label":"patchstack.com/database/…","hostname":"patchstack.com","tags":["VDB Entry"]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/1f55296d-f459-4bd4-979e-5286cc489159","label":"www.wordfence.com/threat-intel/vulnerabilities/id/1f55296d-f459-4bd4-979e-5286cc489159","hostname":"www.wordfence.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-09T12:08:37.866Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-09T20:01:16.901Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T10:12:59.794Z","stale":false,"partial":false}}