{"id":"CVE-2026-73089","aliases":["GHSA-c83g-rgw3-j3cx"],"url":"https://o3.security/vulnerability/CVE-2026-73089","summary":"Browserslist: Unbounded memory growth (no cache eviction) via distinct query results, leading to eventual OOM","details":"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.","published":"2026-08-11T17:05:38.760Z","modified":"2026-08-12T04:18:56.622510856Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/browserslist/browserslist/commit/f2931a3ff2a3a31abf84ef01a7400b270aad6405","label":"browserslist/browserslist@f2931a3"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73089.json"},{"type":"FIX","url":"https://github.com/browserslist/browserslist/commit/f2931a3ff2a3a31abf84ef01a7400b270aad6405"},{"type":"WEB","url":"https://github.com/browserslist/browserslist/releases/tag/4.28.7"},{"type":"ADVISORY","url":"https://github.com/browserslist/browserslist/security/advisories/GHSA-c83g-rgw3-j3cx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73089"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T04:18:56.622510856Z"}}