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CVE-2023-45811 Details

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 `[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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:8.1 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40	CVE	Patch
https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx	CVE	ExploitVendor Advisory
https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts	CVE	Broken Link
https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40	[email protected]	Patch
https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx	[email protected]	ExploitVendor Advisory
https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts	[email protected]	Broken Link

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1321	Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')	[email protected]
CWE-1321	Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')	[email protected]

Affected Products

Product	Versions
relative synchrony	>= 2.0.1, < 2.4.4
CPE cpe:2.3:a:relative:synchrony::::::node.js::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jul 22, 2025	Modified Analysis	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Oct 25, 2023	Initial Analysis	[email protected]