{"id":"CVE-2026-34043","summary":"Serialize JavaScript has CPU Exhaustion Denial of Service via crafted array-like objects","details":"Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted \"array-like\" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.","aliases":["GHSA-qj8w-gfj5-8c6v"],"modified":"2026-04-06T15:44:21.670729Z","published":"2026-03-31T01:48:45.759Z","related":["CGA-2p7j-rwc3-5x9r"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34043.json","cwe_ids":["CWE-400","CWE-834"],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34043.json"},{"type":"FIX","url":"https://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204b"},{"type":"WEB","url":"https://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5"},{"type":"ADVISORY","url":"https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34043"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/yahoo/serialize-javascript","events":[{"introduced":"0"},{"fixed":"df3f1c1fa9ca16b050ae893cb63ac23c91deed55"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"7.0.5"}]}}],"versions":["v1.0.0","v1.1.0","v1.1.1","v1.1.2","v1.2.0","v1.3.0","v1.4.0","v1.5.0","v1.6.0","v1.6.1","v1.7.0","v1.8.0","v1.9.0","v1.9.1","v2.0.0","v2.1.0","v2.1.1","v2.1.2","v3.0.0","v3.1.0","v4.0.0","v5.0.0","v5.0.1","v6.0.0","v6.0.1","v6.0.2","v7.0.0","v7.0.1","v7.0.2","v7.0.3","v7.0.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34043.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}