{"api_version":"1","generated_at":"2026-04-17T06:05:18+00:00","cve":"CVE-2021-24241","urls":{"html":"https://cve.report/CVE-2021-24241","api":"https://cve.report/api/cve/CVE-2021-24241.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-24241","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-24241"},"summary":{"title":"CVE-2021-24241","description":"The Advanced Custom Fields Pro WordPress plugin before 5.9.1 did not properly escape the generated update URL when outputting it in an attribute, leading to a reflected Cross-Site Scripting issue in the update settings page.","state":"PUBLIC","assigner":"contact@wpscan.com","published_at":"2021-04-22 21:15:00","updated_at":"2021-04-29 20:51:00"},"problem_types":["CWE-79"],"metrics":[],"references":[{"url":"https://wpscan.com/vulnerability/d1e9c995-37bd-4952-b88e-945e02e3c83f","name":"https://wpscan.com/vulnerability/d1e9c995-37bd-4952-b88e-945e02e3c83f","refsource":"CONFIRM","tags":[],"title":"Attention Required! | Cloudflare","mime":"text/html","httpstatus":"403","archivestatus":"404"},{"url":"https://github.com/jdordonezn/Reflected-XSS-in-WordPress-for-ACF-PRO-before-5.9.1-plugin/issues/1","name":"https://github.com/jdordonezn/Reflected-XSS-in-WordPress-for-ACF-PRO-before-5.9.1-plugin/issues/1","refsource":"MISC","tags":[],"title":"Reflected XSS in WordPress for 'Advanced Custom Fields PRO' plugin · Issue #1 · jdordonezn/Reflected-XSS-in-WordPress-for-ACF-PRO-before-5.9.1-plugin · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.advancedcustomfields.com/blog/acf-5-9-1-release/","name":"https://www.advancedcustomfields.com/blog/acf-5-9-1-release/","refsource":"MISC","tags":[],"title":"ACF | ACF 5.9.1 Release","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-24241","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24241","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"LEGACY","value":"Juan David Ordoñez Noriega","lang":""}],"nvd_cpes":[{"cve_year":"2021","cve_id":"24241","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"advancedcustomfields","cpe5":"advanced_custom_fields","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"pro","cpe11":"wordpress","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ID":"CVE-2021-24241","ASSIGNER":"contact@wpscan.com","STATE":"PUBLIC","TITLE":"Advanced Custom Field Pro < 5.9.1 - Reflected Cross-Site Scripting (XSS)"},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","generator":"WPScan CVE Generator","affects":{"vendor":{"vendor_data":[{"vendor_name":"Unknown","product":{"product_data":[{"product_name":"Advanced Custom Fields Pro","version":{"version_data":[{"version_affected":"<","version_name":"5.9.1","version_value":"5.9.1"}]}}]}}]}},"description":{"description_data":[{"lang":"eng","value":"The Advanced Custom Fields Pro WordPress plugin before 5.9.1 did not properly escape the generated update URL when outputting it in an attribute, leading to a reflected Cross-Site Scripting issue in the update settings page."}]},"references":{"reference_data":[{"refsource":"CONFIRM","url":"https://wpscan.com/vulnerability/d1e9c995-37bd-4952-b88e-945e02e3c83f","name":"https://wpscan.com/vulnerability/d1e9c995-37bd-4952-b88e-945e02e3c83f"},{"refsource":"MISC","url":"https://github.com/jdordonezn/Reflected-XSS-in-WordPress-for-ACF-PRO-before-5.9.1-plugin/issues/1","name":"https://github.com/jdordonezn/Reflected-XSS-in-WordPress-for-ACF-PRO-before-5.9.1-plugin/issues/1"},{"refsource":"MISC","url":"https://www.advancedcustomfields.com/blog/acf-5-9-1-release/","name":"https://www.advancedcustomfields.com/blog/acf-5-9-1-release/"}]},"problemtype":{"problemtype_data":[{"description":[{"value":"CWE-79 Cross-site Scripting (XSS)","lang":"eng"}]}]},"credit":[{"lang":"eng","value":"Juan David Ordoñez Noriega"}],"source":{"discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2021-04-22 21:15:00","lastModifiedDate":"2021-04-29 20:51:00","problem_types":["CWE-79"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":2.7},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:P/A:N","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":4.3},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:pro:wordpress:*:*","versionEndExcluding":"5.9.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"24241","Ordinal":"199003","Title":"CVE-2021-24241","CVE":"CVE-2021-24241","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"24241","Ordinal":"1","NoteData":"The Advanced Custom Fields Pro WordPress plugin before 5.9.1 did not properly escape the generated update URL when outputting it in an attribute, leading to a reflected Cross-Site Scripting issue in the update settings page.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"24241","Ordinal":"2","NoteData":"2021-04-22","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"24241","Ordinal":"3","NoteData":"2021-04-22","Type":"Other","Title":"Modified"}]}}}