{"id":"DEBIAN-CVE-2026-73088","details":"Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, normalizeStats() in node.js, reached unconditionally through getStat() and loadStat() on every browserslist() call, processes untrusted browserslist-stats.json, opts.stats, and CLI --stats data with an unguarded for...in loop and plain-object bracket access and assignment, allowing inherited Object.prototype keys including __proto__, toString, valueOf, constructor, hasOwnProperty, and isPrototypeOf to cause an uncaught TypeError or modify the prototype of the returned normalized object. This issue is fixed in version 4.28.7.","modified":"2026-09-10T08:47:20.413166623Z","published":"2026-08-11T17:19:16.977Z","upstream":["CVE-2026-73088"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-73088"}],"affected":[{"package":{"name":"node-browserslist","ecosystem":"Debian:12","purl":"pkg:deb/debian/node-browserslist?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.21.10+~cs6.1.25-1","4.21.10+~cs6.1.25-2","4.21.4+~cs6.1.17-2","4.22.1+~cs6.1.27-1","4.22.1+~cs6.1.28-1","4.23.0+~cs6.1.32-1","4.24.4+~cs6.3.21-1","4.24.4+~cs6.3.22-1","4.25.0+~cs6.3.22-1","4.25.2+~cs6.3.22-1","4.26.0+~cs8.11.27-1","4.27.0+~cs8.11.53-1","4.27.0+~cs8.11.53-2","4.28.1+~cs8.14.48-1","4.28.2+~cs8.14.68-1","4.28.7+~cs8.16.65-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73088.json"}},{"package":{"name":"node-browserslist","ecosystem":"Debian:13","purl":"pkg:deb/debian/node-browserslist?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.25.0+~cs6.3.22-1","4.25.2+~cs6.3.22-1","4.26.0+~cs8.11.27-1","4.27.0+~cs8.11.53-1","4.27.0+~cs8.11.53-2","4.28.1+~cs8.14.48-1","4.28.2+~cs8.14.68-1","4.28.7+~cs8.16.65-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73088.json"}},{"package":{"name":"node-browserslist","ecosystem":"Debian:14","purl":"pkg:deb/debian/node-browserslist?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.28.7+~cs8.16.65-1"}]}],"versions":["4.25.0+~cs6.3.22-1","4.25.2+~cs6.3.22-1","4.26.0+~cs8.11.27-1","4.27.0+~cs8.11.53-1","4.27.0+~cs8.11.53-2","4.28.1+~cs8.14.48-1","4.28.2+~cs8.14.68-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73088.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}