{"cve":"CVE-2023-45811","nvd":{"published":"2023-10-17T23:15:12.487","modified":"2026-06-17T06:29:34.340","status":"Analyzed","description":"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","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-1321"],"references":["https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40","https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx","https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts","https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40","https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx"],"products":["relative:synchrony"],"source":"nvd","synced_at":"2026-10-19T21:40:11.519948003+00:00"},"epss":{"cve":"CVE-2023-45811","score":0.0043,"percentile":0.37281,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-jg82-xh3w-rhxx","url":"https://osv.dev/vulnerability/GHSA-jg82-xh3w-rhxx","summary":"Synchrony deobfuscator prototype pollution vulnerability leading to arbitrary code execution","modified":"2025-07-22T15:37:30Z","packages":[{"ecosystem":"npm","name":"deobfuscator","purl":"pkg:npm/deobfuscator","ranges":[">=2.0.1 <2.4.4"],"fixed":["2.4.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}