{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73088","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-10T19:37:41.445Z","datePublished":"2026-08-11T17:00:05.869Z","dateUpdated":"2026-08-13T14:50:43.387Z"},"containers":{"cna":{"title":"Browserslist: Uncaught crash / prototype write via untrusted browserslist-stats.json custom stats (normalizeStats)","problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-248","lang":"en","description":"CWE-248: Uncaught Exception","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/browserslist/browserslist/security/advisories/GHSA-73wf-gq98-2v4g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/browserslist/browserslist/security/advisories/GHSA-73wf-gq98-2v4g"},{"name":"https://github.com/browserslist/browserslist/commit/f9914ad9effc865ccc27d816255625890b31ca51","tags":["x_refsource_MISC"],"url":"https://github.com/browserslist/browserslist/commit/f9914ad9effc865ccc27d816255625890b31ca51"},{"name":"https://github.com/browserslist/browserslist/releases/tag/4.28.7","tags":["x_refsource_MISC"],"url":"https://github.com/browserslist/browserslist/releases/tag/4.28.7"}],"affected":[{"vendor":"browserslist","product":"browserslist","versions":[{"version":"< 4.28.7","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-08-11T17:00:05.869Z"},"descriptions":[{"lang":"en","value":"Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, normalizeStats() in node.js, reached unconditionally through getStat() and loadStat() on every browserslist() call, processes untrusted browserslist-stats.json, opts.stats, and CLI --stats data with an unguarded for...in loop and plain-object bracket access and assignment, allowing inherited Object.prototype keys including __proto__, toString, valueOf, constructor, hasOwnProperty, and isPrototypeOf to cause an uncaught TypeError or modify the prototype of the returned normalized object. This issue is fixed in version 4.28.7."}],"source":{"advisory":"GHSA-73wf-gq98-2v4g","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/browserslist/browserslist/security/advisories/GHSA-73wf-gq98-2v4g","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-13T14:50:35.461987Z","id":"CVE-2026-73088","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-13T14:50:43.387Z"}}]}}