CVE-2021-24153

{"containers": {"cna": {"affected": [{"product": "Yoast SEO", "vendor": "Unknown", "versions": [{"lessThan": "3.4.1", "status": "affected", "version": "3.4.1", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Hammad Shamsi"}], "descriptions": [{"lang": "en", "value": "A Stored Cross-Site Scripting vulnerability was discovered in the Yoast SEO WordPress plugin before 3.4.1, which had built-in blacklist filters which were blacklisting Parenthesis as well as several functions such as alert but bypasses were found."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "CWE-79 Cross-site Scripting (XSS)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-04-05T18:27:42.000Z", "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81", "shortName": "WPScan"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-20c7dca726dc"}, {"tags": ["x_refsource_MISC"], "url": "https://plugins.trac.wordpress.org/changeset/1466243/wordpress-seo"}, {"tags": ["x_refsource_MISC"], "url": "https://packetstormsecurity.com/files/138192/"}], "source": {"discovery": "UNKNOWN"}, "title": "Yoast SEO < 3.4.1 - Authenticated Stored Cross-Site Scripting (XSS)", "x_generator": "WPScan CVE Generator", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "contact@wpscan.com", "ID": "CVE-2021-24153", "STATE": "PUBLIC", "TITLE": "Yoast SEO < 3.4.1 - Authenticated Stored Cross-Site Scripting (XSS)"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Yoast SEO", "version": {"version_data": [{"version_affected": "<", "version_name": "3.4.1", "version_value": "3.4.1"}]}}]}, "vendor_name": "Unknown"}]}}, "credit": [{"lang": "eng", "value": "Hammad Shamsi"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A Stored Cross-Site Scripting vulnerability was discovered in the Yoast SEO WordPress plugin before 3.4.1, which had built-in blacklist filters which were blacklisting Parenthesis as well as several functions such as alert but bypasses were found."}]}, "generator": "WPScan CVE Generator", "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-79 Cross-site Scripting (XSS)"}]}]}, "references": {"reference_data": [{"name": "https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-20c7dca726dc", "refsource": "CONFIRM", "url": "https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-20c7dca726dc"}, {"name": "https://plugins.trac.wordpress.org/changeset/1466243/wordpress-seo", "refsource": "MISC", "url": "https://plugins.trac.wordpress.org/changeset/1466243/wordpress-seo"}, {"name": "https://packetstormsecurity.com/files/138192/", "refsource": "MISC", "url": "https://packetstormsecurity.com/files/138192/"}]}, "source": {"discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T19:21:18.410Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-20c7dca726dc"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://plugins.trac.wordpress.org/changeset/1466243/wordpress-seo"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://packetstormsecurity.com/files/138192/"}]}]}, "cveMetadata": {"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81", "assignerShortName": "WPScan", "cveId": "CVE-2021-24153", "datePublished": "2021-04-05T18:27:42.000Z", "dateReserved": "2021-01-14T00:00:00.000Z", "dateUpdated": "2024-08-03T19:21:18.410Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Yoast SEO", "vendor": "Unknown", "versions": [{"lessThan": "3.4.1", "status": "affected", "version": "3.4.1", "versionType": "custom"}]}], "source": "contact@wpscan.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:yoast:yoast_seo:*:*:*:*:*:wordpress:*:*", "matchCriteriaId": "1CDDDA6D-76CF-4003-9739-A9DE41F076AB", "versionEndExcluding": "3.4.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A Stored Cross-Site Scripting vulnerability was discovered in the Yoast SEO WordPress plugin before 3.4.1, which had built-in blacklist filters which were blacklisting Parenthesis as well as several functions such as alert but bypasses were found."}, {"lang": "es", "value": "Se detect\u00f3 una vulnerabilidad de tipo Cross-Site Scripting Almacenado en el plugin Yoast SEO WordPress versiones anteriores a 3.4.1, que ten\u00eda filtros de lista negra incorporados que inclu\u00edan par\u00e9ntesis en la lista negra, as\u00ed como varias funciones como alertas pero se encontraron omisiones"}], "id": "CVE-2021-24153", "lastModified": "2026-06-17T03:39:29.040", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 3.5, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-04-05T19:15:14.560", "references": [{"source": "contact@wpscan.com", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "https://packetstormsecurity.com/files/138192/"}, {"source": "contact@wpscan.com", "tags": ["Third Party Advisory"], "url": "https://plugins.trac.wordpress.org/changeset/1466243/wordpress-seo"}, {"source": "contact@wpscan.com", "tags": ["Third Party Advisory"], "url": "https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-20c7dca726dc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "https://packetstormsecurity.com/files/138192/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://plugins.trac.wordpress.org/changeset/1466243/wordpress-seo"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-20c7dca726dc"}], "sourceIdentifier": "contact@wpscan.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "contact@wpscan.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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