{"id":"CVE-2026-73490","title":"Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri","summary":"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 …","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-08-12","updated":"2026-09-09","sourceUpdated":"2026-09-09T20:58:37.713","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73490","references":[{"url":"https://github.com/flavorjones/loofah/commit/20867b9be689521887364b74822c41ef830523c9","label":"security-advisories@github.com"},{"url":"https://github.com/flavorjones/loofah/pull/308","label":"security-advisories@github.com"},{"url":"https://github.com/flavorjones/loofah/releases/tag/v2.25.2","label":"security-advisories@github.com"},{"url":"https://github.com/flavorjones/loofah/security/advisories/GHSA-9wjq-cp2p-hrgf","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.0018,"epssPercentile":0.07839,"ingestedAt":"2026-09-09T21:22:45.532Z","slug":"CVE-2026-73490","body":"## Overview\n\nLoofah 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}