Resource exhaustion in Browserslist

CVE-2026-73089

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…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-73089?
CVE-2026-73089 is a high-severity vulnerability in Browserslist, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-08-11.
How severe is CVE-2026-73089?
High severity. CVSS v3 base score is 7.5 out of 10.