Cyber Resilience

CVE-2023-26920

MediumPublic PoC

Published: 12 December 2023

Published
12 December 2023
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0020 41.9th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-26920 is a medium-severity Prototype Pollution (CWE-1321) vulnerability in Naturalintelligence Fast Xml Parser. Its CVSS base score is 6.5 (Medium).

Operationally, ranked at the 41.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.

CWE(s)
CWE-1321

Related Threats

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

Affected Assets

naturalintelligence
fast xml parser
≤ 4.1.2

Mitigating Controls

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

References