| Name | CVE-2026-73088 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| node-browserslist (PTS) | bookworm | 4.21.4+~cs6.1.17-2 | vulnerable |
| trixie | 4.25.0+~cs6.3.22-1 | vulnerable | |
| forky, sid | 4.28.7+~cs8.16.65-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| node-browserslist | source | (unstable) | 4.28.7+~cs8.16.65-1 |
[trixie] - node-browserslist <no-dsa> (Minor issue)
https://github.com/browserslist/browserslist/security/advisories/GHSA-73wf-gq98-2v4g
Fixed by: https://github.com/browserslist/browserslist/commit/f9914ad9effc865ccc27d816255625890b31ca51 (4.28.7)