{"id":"CVE-2026-73492","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. From 2.25.0 until 2.25.2, Loofah::HTML5::Scrub.allowed_uri? does not reject javascript: or vbscript: URIs whose sch…","severity":"none","cwe":["CWE-79","CWE-184"],"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-2026-73492","references":[{"url":"https://github.com/flavorjones/loofah/commit/f1be9d893b5a8dd79240441a912d8897e74c38c0","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-5qhf-9phg-95m2","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00245,"epssPercentile":0.15976,"ingestedAt":"2026-09-09T21:22:45.532Z","slug":"CVE-2026-73492","body":"## Overview\n\nLoofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. From 2.25.0 until 2.25.2, Loofah::HTML5::Scrub.allowed_uri? does not reject javascript: or vbscript: URIs whose scheme is split by semicolon-less numeric character references such as &#58, &#9, &#10, or &#13. CGI.unescapeHTML leaves these references encoded, so allowed_uri? reports the URL safe even though a browser decodes an encoded colon or strips encoded whitespace and executes the resulting URI scheme. This issue affects only callers that pass HTML-encoded strings directly to allowed_uri?; Loofah's default sanitize() path is not 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":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}