{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-73490", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-12T19:00:33.735Z", "datePublished": "2026-08-12T20:58:12.219Z", "dateUpdated": "2026-08-12T20:58:12.219Z"}, "containers": {"cna": {"title": "Loofah: SVG `href` attribute bypasses local-reference restriction", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/flavorjones/loofah/security/advisories/GHSA-9wjq-cp2p-hrgf", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/flavorjones/loofah/security/advisories/GHSA-9wjq-cp2p-hrgf"}, {"name": "https://github.com/flavorjones/loofah/pull/308", "tags": ["x_refsource_MISC"], "url": "https://github.com/flavorjones/loofah/pull/308"}, {"name": "https://github.com/flavorjones/loofah/commit/20867b9be689521887364b74822c41ef830523c9", "tags": ["x_refsource_MISC"], "url": "https://github.com/flavorjones/loofah/commit/20867b9be689521887364b74822c41ef830523c9"}, {"name": "https://github.com/flavorjones/loofah/releases/tag/v2.25.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/flavorjones/loofah/releases/tag/v2.25.2"}], "affected": [{"vendor": "flavorjones", "product": "loofah", "versions": [{"version": "< 2.25.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-12T20:58:12.219Z"}, "descriptions": [{"lang": "en", "value": "Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Prior to 2.25.2, Loofah's HTML5 sanitizer applies its local-reference restriction only to the xlink:href attribute on SVG use and feImage elements, while browsers also accept the plain href attribute. A crafted sanitized SVG can therefore reference an arbitrary same-origin external document; use may render external SVG content containing scripts or other dangerous content, and feImage may load external images for tracking. Applications that sanitize user-supplied SVG with Loofah's default allowlist are affected. This issue is fixed in version 2.25.2."}], "source": {"advisory": "GHSA-9wjq-cp2p-hrgf", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "loofah", "vendor": "flavorjones", "versions": [{"status": "affected", "version": "< 2.25.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Prior to 2.25.2, Loofah's HTML5 sanitizer applies its local-reference restriction only to the xlink:href attribute on SVG use and feImage elements, while browsers also accept the plain href attribute. A crafted sanitized SVG can therefore reference an arbitrary same-origin external document; use may render external SVG content containing scripts or other dangerous content, and feImage may load external images for tracking. Applications that sanitize user-supplied SVG with Loofah's default allowlist are affected. This issue is fixed in version 2.25.2."}], "id": "CVE-2026-73490", "lastModified": "2026-08-12T21:17:42.127", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-12T21:17:42.127", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/flavorjones/loofah/commit/20867b9be689521887364b74822c41ef830523c9"}, {"source": "security-advisories@github.com", "url": "https://github.com/flavorjones/loofah/pull/308"}, {"source": "security-advisories@github.com", "url": "https://github.com/flavorjones/loofah/releases/tag/v2.25.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/flavorjones/loofah/security/advisories/GHSA-9wjq-cp2p-hrgf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}