TI-2023-24572 Aliases CVE-2023-45811 GHSA-jg82-xh3w-rhxx

Prototype pollution vulnerability leading to arbitrary code execution in synchrony deobfuscator

HIGH 71CWE-1321Published 2023-10-17 · Updated 2024-09-13

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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 `[email protected]`. 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

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0043 37th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed synchrony (relative): 2.4.4deobfuscator (npm): 2.4.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
relative	synchrony	2.0.1 to before 2.4.4	2.4.4	Patch available	CNA
—	deobfuscator (npm)	2.0.1 to before 2.4.4	2.4.4	Patch available	GHSA-jg82-xh3w-rhxx

synchrony Vendorrelative Affected 2.0.1 to before 2.4.4 Fixed in 2.4.4 Patch available CNA
deobfuscator (npm) Vendor— Affected 2.0.1 to before 2.4.4 Fixed in 2.4.4 Patch available GHSA-jg82-xh3w-rhxx

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:relative:synchrony::::::node.js::*	2.0.1 to before 2.4.4	Vulnerable	relative

cpe:2.3:a:relative:synchrony:*:*:*:*:*:node.js:*:* Versions 2.0.1 to before 2.4.4 Vulnerable ·relative

Remediation

Fix · CNA synchrony (relative) Fixed in 2.4.4
Fix · GHSA-jg82-xh3w-rhxx deobfuscator (npm) Fixed in 2.4.4 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2023-45811
2026-10-03 Alias added: GHSA-jg82-xh3w-rhxx

References

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences