{"id":"DEBIAN-CVE-2026-28348","details":"lxml_html_clean is a project for HTML cleaning functionalities copied from `lxml.html.clean`. Prior to version 0.4.4, the _has_sneaky_javascript() method strips backslashes before checking for dangerous CSS keywords. This causes CSS Unicode escape sequences to bypass the @import and expression() filters, allowing external CSS loading or XSS in older browsers. This issue has been patched in version 0.4.4.","modified":"2026-10-01T03:03:03.083695858Z","published":"2026-03-05T20:16:16.180Z","upstream":["CVE-2026-28348"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-28348"}],"affected":[{"package":{"name":"lxml","ecosystem":"Debian:12","purl":"pkg:deb/debian/lxml?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.9.2-1+deb12u1"}]}],"versions":["4.9.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28348.json"}},{"package":{"name":"lxml","ecosystem":"Debian:13","purl":"pkg:deb/debian/lxml?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.0-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28348.json"}},{"package":{"name":"lxml","ecosystem":"Debian:14","purl":"pkg:deb/debian/lxml?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.0-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28348.json"}},{"package":{"name":"lxml-html-clean","ecosystem":"Debian:13","purl":"pkg:deb/debian/lxml-html-clean?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.4-1~deb13u1"}]}],"versions":["0.4.2-1","0.4.3-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28348.json"}},{"package":{"name":"lxml-html-clean","ecosystem":"Debian:14","purl":"pkg:deb/debian/lxml-html-clean?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.4-1"}]}],"versions":["0.4.2-1","0.4.3-1","0.4.4-1~deb13u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28348.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}