CVE-2023-45811

Public Exploit
Prototype pollution vulnerability leading to arbitrary code execution in synchrony deobfuscator

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

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.13%
Vendor Advisory github.com
Affected: relative synchrony
Published at:
Updated at:

References

Link Tags
https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx vendor advisory exploit
https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40 patch
https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts broken link

Frequently Asked Questions

What is the severity of CVE-2023-45811?
CVE-2023-45811 has been scored as a high severity vulnerability.
How to fix CVE-2023-45811?
To fix CVE-2023-45811, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-45811 being actively exploited in the wild?
It is possible that CVE-2023-45811 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-45811?
CVE-2023-45811 affects relative synchrony.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.