CVE-2021-23980

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{"affected": [{"affectedData": [{"product": "Mozilla Bleach", "vendor": "Mozilla", "versions": [{"lessThan": "3.3.0", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:bleach:*:*:*:*:*:*:*:*", "matchCriteriaId": "35A5AE32-F1B2-41FC-9F87-1E2445A09966", "versionEndExcluding": "3.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A mutation XSS affects users calling bleach.clean with all of: svg or math in the allowed tags p or br in allowed tags style, title, noscript, script, textarea, noframes, iframe, or xmp in allowed tags the keyword argument strip_comments=False Note: none of the above tags are in the default allowed tags and strip_comments defaults to True."}, {"lang": "es", "value": "Una mutaci\u00f3n XSS afecta a los usuarios que llaman a bleach.clean con todo: svg o math en las etiquetas permitidas p o br en las etiquetas permitidas estilo, t\u00edtulo, noscript, script, textarea, noframes, iframe o xmp en las etiquetas permitidas el argumento de palabra clave strip_comments= Falso Nota: ninguna de las etiquetas anteriores est\u00e1 en las etiquetas permitidas predeterminadas y strip_comments tiene el valor predeterminado Verdadero."}], "id": "CVE-2021-23980", "lastModified": "2026-06-17T03:39:06.300", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-23980", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-03-19T15:18:14.680659Z", "version": "2.0.3"}}]}, "published": "2023-02-16T22:15:10.713", "references": [{"source": "security@mozilla.org", "tags": ["Exploit", "Issue Tracking"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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