Cyber Resilience

CVE-2023-0842

MediumPublic PoC

Published: 05 April 2023

Published
05 April 2023
Modified
24 September 2025
KEV Added
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Patch
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CVSS Score v3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS Score 0.0029 52.9th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-0842 is a medium-severity Prototype Pollution (CWE-1321) vulnerability in Xml2Js Project Xml2Js. Its CVSS base score is 5.3 (Medium).

Operationally, ranked in the top 47.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

xml2js version 0.4.23 allows an external attacker to edit or add new properties to an object. This is possible because the application does not properly validate incoming JSON keys, thus allowing the __proto__ property to be edited.

CWE(s)
CWE-1321

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

xml2js project
xml2js
0.4.23

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References