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.
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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 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-11T17:05:38.760Z
Reserved: 2026-08-10T19:37:41.445Z
Link: CVE-2026-73089
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Status : Received
Published: 2026-08-11T17:19:17.123
Modified: 2026-08-11T17:19:17.123
Link: CVE-2026-73089
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