Cyber Resilience

CVE-2021-40894

HighPublic PoC

Published: 24 June 2022

Published
24 June 2022
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0033 56.7th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-40894 is a high-severity Inefficient Regular Expression Complexity (CWE-1333) vulnerability in Underscore-99Xp Project Underscore-99Xp. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 43.3% 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

A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in underscore-99xp v1.7.2 when the deepValueSearch function is called.

CWE(s)
CWE-1333

Related Threats

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

Affected Assets

underscore-99xp project
underscore-99xp
1.7.2

Mitigating Controls

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

References