{"id":"EM-20261112-9BR1","url":"https://cyber.eventmonitor.net/incident/EM-20261112-9BR1/loofah-vulnerability-cve-2026-126206/","type":"cve","title":"Loofah Vulnerability (CVE-2026-126206)","subtitle":"CVE-2026-126206","subject":"CVE-2026-126206","status":"Developing","severity":"medium","affected":[],"headline":null,"born":"2026-11-12T20:56:30.000Z","firstSignal":"2026-11-12T20:51:36.000Z","lastSignal":"2026-11-12T20:56:30.000Z","updated":"2026-11-13T00:40:17.050Z","revision":1,"life":[{"status":"Born","at":"2026-11-12T20:56:30.000Z","why":"second independent source: C26 GitHub Advisory Database"},{"status":"Developing","at":"2026-11-12T20:56:30.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-12T20:51:36.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-12T20:56:30.000Z","what":"Born: second source, C26 GitHub Advisory Database. Page EM-20261112-9BR1 created."}],"stages":[{"name":"Disclosed","at":"2026-11-12T21:17:21.670Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-12T21:17:21.670Z","detail":"CVSS 5.3"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-12T20:51:36.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-12T20:51:36.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":2,"title":"Red Hat: CVE-2026-126206 (moderate)","text":"loofah: Loofah: Cross-site scripting via improper data URI validation","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-126206.json"},{"at":"2026-11-12T20:56:30.000Z","source":"C26","sourceName":"GitHub Advisory Database","role":"Database","severity":2,"title":"GHSA-jcff-cj73-4w4f / CVE-2026-126206: Loofah allowed_uri? treats data:text/html as safe text/plain","text":"rubygems:loofah","url":"https://github.com/advisories/GHSA-jcff-cj73-4w4f"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-12T21:17:21.670","score":5.3,"severity":"MEDIUM","desc":"Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. In 2.25.2, Loofah::HTML5::Scrub.allowed_uri? treats a data URI mediatype containing the HTML5 named solidus reference / as malformed and falls back to the allowed…","product":"","seen":1794530417050},"kev":null,"epss":null,"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}