{"id":"DEBIAN-CVE-2026-25896","details":"fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot (.) in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow built-in XML entities (<, >, &, ", ') with arbitrary values. This bypasses entity encoding and leads to XSS when parsed output is rendered. This vulnerability is fixed in 5.3.5.","modified":"2026-09-11T18:47:40.557971709Z","published":"2026-02-20T21:19:27.470Z","upstream":["CVE-2026-25896"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-25896"}],"affected":[{"package":{"name":"node-webfont","ecosystem":"Debian:12","purl":"pkg:deb/debian/node-webfont?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["11.4.0+dfsg2+~cs35.7.26-10","11.4.0+dfsg2+~cs35.7.26-11","11.4.0+dfsg2+~cs35.7.26-12","11.4.0+dfsg2+~cs35.7.26-13","11.4.0+dfsg2+~cs35.7.26-14","11.4.0+dfsg2+~cs35.7.26-15","11.4.0+dfsg2+~cs35.7.26-16","11.4.0+dfsg2+~cs35.7.26-18","11.4.0+dfsg2+~cs35.7.26-19","11.4.0+dfsg2+~cs35.7.26-20","11.4.0+dfsg2+~cs35.7.26-21","11.4.0+dfsg2+~cs35.7.26-7","11.4.0+dfsg2+~cs35.7.26-8","11.4.0+dfsg2+~cs35.7.26-9"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25896.json"}},{"package":{"name":"node-webfont","ecosystem":"Debian:13","purl":"pkg:deb/debian/node-webfont?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["11.4.0+dfsg2+~cs35.7.26-13","11.4.0+dfsg2+~cs35.7.26-14","11.4.0+dfsg2+~cs35.7.26-15","11.4.0+dfsg2+~cs35.7.26-16","11.4.0+dfsg2+~cs35.7.26-18","11.4.0+dfsg2+~cs35.7.26-19","11.4.0+dfsg2+~cs35.7.26-20","11.4.0+dfsg2+~cs35.7.26-21"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25896.json"}},{"package":{"name":"node-webfont","ecosystem":"Debian:14","purl":"pkg:deb/debian/node-webfont?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["11.4.0+dfsg2+~cs35.7.26-13","11.4.0+dfsg2+~cs35.7.26-14","11.4.0+dfsg2+~cs35.7.26-15","11.4.0+dfsg2+~cs35.7.26-16","11.4.0+dfsg2+~cs35.7.26-18","11.4.0+dfsg2+~cs35.7.26-19","11.4.0+dfsg2+~cs35.7.26-20","11.4.0+dfsg2+~cs35.7.26-21"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25896.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N"}]}