Is CVE-2021-31805 in the CISA KEV catalog?

No. CVE-2021-31805 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-31805?

CVE-2021-31805 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-31805?

CVE-2021-31805 has an EPSS score of 85.31% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-31805?

No published fix for CVE-2021-31805 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-31805

CRITICALEPSS 100th pctl

9.8

CVSS v3

NVD

Description

The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation.

CWE-917

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

85.31%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

Patch1

cwiki.apache.org

Mitigation1

openwall.com

Third-Party Advisory1

security.netapp.com

Other references1

oracle.com

Related Vulnerabilities

Other CWE-917 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-26134	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-26084	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2021-45046	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2022-22963	Critical	9.8	100%	KEV	-
CVE-2020-10199	High	8.8	99%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.