Vulnerability Description
Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, index.js retains every distinct `(queries, context)` result in cache and every parseQueries() AST in parseCache without a size cap, TTL, or eviction, allowing an attacker who can influence repeated browserslist() query values, including valid since `<year>-<month>-<day>` queries, to bypass the caller-controlled BROWSERSLIST_DISABLE_CACHE mitigation and cause linear memory growth followed by an out-of-memory process crash. This issue is fixed in version 4.28.7.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/browserslist/browserslist/commit/f2931a3ff2a3a31abf84ef01a740
- https://github.com/browserslist/browserslist/releases/tag/4.28.7
- https://github.com/browserslist/browserslist/security/advisories/GHSA-c83g-rgw3-
FAQ
What is CVE-2026-73089?
CVE-2026-73089 is a vulnerability with a CVSS score of 7.5 (HIGH). Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, index.js retains every distinct `(queries, context)` result in cache and...
How severe is CVE-2026-73089?
CVE-2026-73089 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-73089?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.