Bug 2514195 (CVE-2026-73089) - CVE-2026-73089 browserslist: Browserslist: Denial of Service via unbounded memory growth from distinct query results
Summary: CVE-2026-73089 browserslist: Browserslist: Denial of Service via unbounded me...
Keywords:
Status: NEW
Alias: CVE-2026-73089
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-11 17:13 UTC by OSIDB Bzimport
Modified: 2026-08-15 08:27 UTC (History)
141 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description OSIDB Bzimport 2026-08-11 17:13:11 UTC
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.


Note You need to log in before you can comment on or make changes to this bug.