CVE-2023-45811: Relative Synchrony

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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

Affected products

• Relative Synchrony: from 2.0.1, before 2.4.4 (fixed in 2.4.4)

Published 2023-10-17. Last modified 2026-06-17.