{"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": "2026-08-13T13:01:57.912Z"}, "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"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-13T13:01:37.604672Z", "id": "CVE-2026-73490", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-13T13:01:57.912Z"}}]}}

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{"bugzilla": {"description": "loofah: Loofah: SVG `href` attribute bypasses local-reference restriction", "id": "2514992", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2514992"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-184", "details": ["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.", "A flaw was found in Loofah. The HTML5 sanitizer incorrectly 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 remote attacker could exploit this by crafting a sanitized SVG that references an arbitrary same-origin external document. This could lead to information disclosure through external image loading for tracking or potentially script execution by rendering external SVG content containing malicious scripts."], "name": "CVE-2026-73490", "public_date": "2026-08-12T20:58:12Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-73490\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-73490\nhttps://github.com/flavorjones/loofah/commit/20867b9be689521887364b74822c41ef830523c9\nhttps://github.com/flavorjones/loofah/pull/308\nhttps://github.com/flavorjones/loofah/releases/tag/v2.25.2\nhttps://github.com/flavorjones/loofah/security/advisories/GHSA-9wjq-cp2p-hrgf"], "threat_severity": "Moderate"}

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