{"api_version":"1","generated_at":"2026-04-24T22:11:36+00:00","cve":"CVE-2021-4386","urls":{"html":"https://cve.report/CVE-2021-4386","api":"https://cve.report/api/cve/CVE-2021-4386.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-4386","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-4386"},"summary":{"title":"WP Security Question <= 1.0.5 - Cross-Site Request Forgery Bypass","description":"The WP Security Question plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0.5. This is due to missing or incorrect nonce validation on the save() function. This makes it possible for unauthenticated attackers to modify the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.","state":"PUBLISHED","assigner":"Wordfence","published_at":"2023-07-01 04:15:10","updated_at":"2026-04-08 17:16:39"},"problem_types":["CWE-352","CWE-352 CWE-352 Cross-Site Request Forgery (CSRF)"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Secondary","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"security@wordfence.com","type":"Primary","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","data":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/","name":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Multiple WordPress plugins fixed CSRF vulnerabilities (part 2). – NinTechNet","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/","name":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Multiple WordPress plugins fixed CSRF vulnerabilities (part 1). – NinTechNet","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/","name":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Multiple WordPress plugins fixed CSRF vulnerabilities (part 4). – NinTechNet","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://plugins.trac.wordpress.org/browser/wp-security-questions/trunk/modules/settings/model.settings.php#L34","name":"https://plugins.trac.wordpress.org/browser/wp-security-questions/trunk/modules/settings/model.settings.php#L34","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Not Applicable"],"title":"403 Forbidden","mime":"text/html","httpstatus":"403","archivestatus":"404"},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/","name":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Multiple WordPress plugins fixed CSRF vulnerabilities (part 3). – NinTechNet","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/","name":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"Multiple WordPress plugins fixed CSRF vulnerabilities (part 5). – NinTechNet","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/23f9d758-4b5e-44e5-9f58-a37b01c4ffdb?source=cve","name":"https://www.wordfence.com/threat-intel/vulnerabilities/id/23f9d758-4b5e-44e5-9f58-a37b01c4ffdb?source=cve","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"WP Security Question <= 1.0.5 - Cross-Site Request Forgery Bypass","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/","name":"https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"25 WordPress plugins vulnerable to CSRF attacks. – NinTechNet","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/","name":"https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"title":"More WordPress plugins and themes vulnerable to CSRF attacks. – NinTechNet","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-4386","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4386","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"flippercode","product":"WP Security Question","version":"affected 1.0.5 semver","platforms":[]}],"timeline":[{"source":"CNA","time":"2021-08-16T00:00:00.000Z","lang":"en","value":"Disclosed"}],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Jerome Bruandet","lang":"en"}],"nvd_cpes":[{"cve_year":"2021","cve_id":"4386","vulnerable":"1","versionEndIncluding":"1.0.5","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"flippercode","cpe5":"wp-security-questions","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"wordpress","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-03T17:23:10.751Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"tags":["x_transferred"],"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/23f9d758-4b5e-44e5-9f58-a37b01c4ffdb?source=cve"},{"tags":["x_transferred"],"url":"https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/"},{"tags":["x_transferred"],"url":"https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/"},{"tags":["x_transferred"],"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/"},{"tags":["x_transferred"],"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/"},{"tags":["x_transferred"],"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/"},{"tags":["x_transferred"],"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/"},{"tags":["x_transferred"],"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/"},{"tags":["x_transferred"],"url":"https://plugins.trac.wordpress.org/browser/wp-security-questions/trunk/modules/settings/model.settings.php#L34"}],"title":"CVE Program Container"},{"metrics":[{"other":{"content":{"id":"CVE-2021-4386","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2024-11-25T18:33:05.228266Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2024-11-25T18:33:14.860Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"WP Security Question","vendor":"flippercode","versions":[{"lessThanOrEqual":"1.0.5","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Jerome Bruandet"}],"descriptions":[{"lang":"en","value":"The WP Security Question plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0.5. This is due to missing or incorrect nonce validation on the save() function. This makes it possible for unauthenticated attackers to modify the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link."}],"metrics":[{"cvssV3_1":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-352","description":"CWE-352 Cross-Site Request Forgery (CSRF)","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-04-08T16:42:07.230Z","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","shortName":"Wordfence"},"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/23f9d758-4b5e-44e5-9f58-a37b01c4ffdb?source=cve"},{"url":"https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/"},{"url":"https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/"},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/"},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/"},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/"},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/"},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/"},{"url":"https://plugins.trac.wordpress.org/browser/wp-security-questions/trunk/modules/settings/model.settings.php#L34"}],"timeline":[{"lang":"en","time":"2021-08-16T00:00:00.000Z","value":"Disclosed"}],"title":"WP Security Question <= 1.0.5 - Cross-Site Request Forgery Bypass"}},"cveMetadata":{"assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","assignerShortName":"Wordfence","cveId":"CVE-2021-4386","datePublished":"2023-07-01T03:30:14.115Z","dateReserved":"2023-06-30T15:26:25.045Z","dateUpdated":"2026-04-08T16:42:07.230Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2023-07-01 04:15:10","lastModifiedDate":"2026-04-08 17:16:39","problem_types":["CWE-352","CWE-352 CWE-352 Cross-Site Request Forgery (CSRF)"],"metrics":{"cvssMetricV31":[{"source":"security@wordfence.com","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":1.4}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:flippercode:wp-security-questions:*:*:*:*:*:wordpress:*:*","versionEndIncluding":"1.0.5","matchCriteriaId":"97E1612C-D868-462A-A02D-737512FBA8B3"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"4386","Ordinal":"1","Title":"WP Security Question <= 1.0.5 - Cross-Site Request Forgery Bypas","CVE":"CVE-2021-4386","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"4386","Ordinal":"1","NoteData":"The WP Security Question plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0.5. This is due to missing or incorrect nonce validation on the save() function. This makes it possible for unauthenticated attackers to modify the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.","Type":"Description","Title":"WP Security Question <= 1.0.5 - Cross-Site Request Forgery Bypas"}]}}}