{"id":"CVE-2023-45811","aliases":["GHSA-jg82-xh3w-rhxx"],"url":"https://o3.security/vulnerability/CVE-2023-45811","summary":"Prototype pollution vulnerability leading to arbitrary code execution in synchrony deobfuscator","details":"Synchrony deobfuscator is a javascript cleaner & deobfuscator.  A `__proto__` pollution vulnerability exists in versions before v2.4.4. Successful exploitation could lead to arbitrary code execution. A `__proto__` pollution vulnerability exists in the `LiteralMap` transformer allowing crafted input to modify properties in the Object prototype. A fix has been released in `deobfuscator@2.4.4`. Users are advised to upgrade. Users unable to upgrade should launch node with the [--disable-proto=delete][disable-proto] or [--disable-proto=throw][disable-proto] flags\n","published":"2023-10-17T22:37:20.249Z","modified":"2026-08-12T03:51:48.529348013Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"deobfuscator","fixedVersion":"2.4.4"}],"fix":{"url":"https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40","label":"relative/synchrony@b583126"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45811.json"},{"type":"ADVISORY","url":"https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx"},{"type":"ADVISORY","url":"https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45811"},{"type":"FIX","url":"https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:48.529348013Z"}}