{"schemaVersion":3,"id":"CVE-2026-14820","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The Quiz and Survey Master (QSM)  WordPress plugin before 11.1.3 does not implement rate limiting or standard failed-login auditing on its front-end credential-check functionality and returns distinct responses for valid and invalid accounts, allowing unauthenticated attackers to enumerate valid usernames and to brute-force passwords while bypassing brute-force protection Quiz and Survey Master (QSM)  WordPress plugin before 11.1.3.","dates":{"published":"2026-07-27T06:00:05.866Z","modified":"2026-07-27T17:37:40.405Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00374,"percentile":0.29892,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.15,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00224},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00374,"percentile":0.29892}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00224,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00374,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00374,"percentile":0.29892}]},"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_E0DA169D37FEA86D","name":"Exploit Reference (wpscan.com)","source":"reference","url":"https://wpscan.com/vulnerability/22af8c73-8147-4205-8285-a35881f2d041/","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor","description":"The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/200.html"}],"affected":[{"vendor":"unknown","product":"quiz and survey master (qsm)","name":"Quiz and Survey Master (QSM)","label":"quiz and survey master (qsm)","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 11.1.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 11.1.3","eol":null,"hubHref":"/vendor/unknown/quiz_and_survey_master_qsm"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://wpscan.com/vulnerability/22af8c73-8147-4205-8285-a35881f2d041/","label":"wpscan.com/vulnerability/22af8c73-8147-4205-8285-a35881f2d041/","hostname":"wpscan.com","tags":["Exploit","VDB Entry","Technical Description"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-07-27T06:00:05.866Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-27T17:37:40.405Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":31,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T13:54:19.723Z","stale":false,"partial":false}}