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.
History

Tue, 11 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title Browserslist: Unbounded memory growth (no cache eviction) via distinct query results, leading to eventual OOM
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-08-11T17:05:38.760Z

Reserved: 2026-08-10T19:37:41.445Z

Link: CVE-2026-73089

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-11T17:19:17.123

Modified: 2026-08-11T17:19:17.123

Link: CVE-2026-73089

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.