{"schemaVersion":3,"id":"CVE-2021-24691","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The Quiz And Survey Master WordPress plugin before 7.3.2 does not escape the Quiz Url Slug setting before outputting it in some pages, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed","dates":{"published":"2021-10-11T10:45:42.000Z","modified":"2024-08-03T19:42:16.107Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.8,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":4.8,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":3.5,"severity":"low","vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"wordfence","score":4.8,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0062,"percentile":0.48733,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.0062},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0062,"percentile":0.48733}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0062,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0062,"percentile":0.48733}]},"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":[{"id":"REF_EAFE453F3CBE090A","name":"Exploit Reference (wpscan.com)","source":"reference","url":"https://wpscan.com/vulnerability/ecf6a082-b563-42c4-9d8c-3757aa6b696f","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","description":"The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/79.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":"< 7.3.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.3.2","eol":null,"hubHref":"/vendor/expresstech/quiz_and_survey_master"},{"vendor":"unknown","product":"quiz and survey master – best quiz, exam and survey plugin for wordpress","name":"Quiz And Survey Master – Best Quiz, Exam and Survey Plugin for WordPress","label":"quiz and survey master – best quiz, exam and survey plugin for wordpress","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 7.3.2, < 7.3.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 7.3.2, < 7.3.2","eol":null,"hubHref":"/vendor/unknown/quiz_and_survey_master_-_best_quiz_exam_and_survey_plugin_for_wordpress"},{"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":"≤ 7.3.1 (fixed in 7.3.2)","noFixRecorded":false,"fixedIn":"7.3.2"}],"versionsText":"≤ 7.3.1 (fixed in 7.3.2)","eol":null,"hubHref":null}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://wpscan.com/vulnerability/ecf6a082-b563-42c4-9d8c-3757aa6b696f","label":"wpscan.com/vulnerability/ecf6a082-b563-42c4-9d8c-3757aa6b696f","hostname":"wpscan.com","tags":["X Refsource MISC","Exploit","Third Party Advisory"]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/6b8ed659-0590-411f-9017-f695c9c2f322","label":"www.wordfence.com/threat-intel/vulnerabilities/id/6b8ed659-0590-411f-9017-f695c9c2f322","hostname":"www.wordfence.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-10-11T10:45:42.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-03T19:42:16.107Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":29,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T07:15:13.561Z","stale":false,"partial":false}}