Cyber Resilience

CVE-2022-42743

MediumPublic PoC

Published: 03 November 2022

Published
03 November 2022
Modified
05 May 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 0.0033 56.3th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-42743 is a medium-severity Prototype Pollution (CWE-1321) vulnerability in Deep-Parse-Json Project Deep-Parse-Json. Its CVSS base score is 5.3 (Medium).

Operationally, ranked in the top 43.7% 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

deep-parse-json version 1.0.2 allows an external attacker to edit or add new properties to an object. This is possible because the application does not correctly validate the 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

deep-parse-json project
deep-parse-json
1.0.2

Mitigating Controls

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

References