Is CVE-2021-21252 in the CISA KEV catalog?

No. CVE-2021-21252 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21252?

CVE-2021-21252 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-21252?

CVE-2021-21252 has an EPSS score of 3.53% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21252?

Upgrade jquery validation to 1.19.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-21252

MEDIUMEPSS 88th pctl

5.3

CVSS v3

NVD

Description

The jQuery Validation Plugin provides drop-in validation for your existing forms. It is published as an npm package "jquery-validation". jquery-validation before version 1.19.3 contains one or more regular expressions that are vulnerable to ReDoS (Regular Expression Denial of Service). This is fixed in 1.19.3.

CWE-400Resource Exhaustion

How to fix

Remediation Available

jquery validationNVD

Affected:< 1.19.3Fixed in:1.19.3CVE-2021-21252derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

3.53%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Patch2

Third-Party Advisory3

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	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.