CVE-2021-21252

mediumpriority · track · 31EPSS 0.036 · 89 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

3.57% (89th) EPSS

CVSS 5 · medium

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · security-advisories@github.comexploitability 3.9 · impact 1.4

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USprimaryCWE-400US

affected products (5)

Products and version ranges known to be affected.

jquery-validation jquery-validation≤ < 1.19.3enisa_euvdEU
jqueryvalidation jquery validation< 1.19.3nvdUScpe:2.3:a:jqueryvalidation:jquery_validation:*:*:*:*:*:*:*:*
netapp snapcenterall versionsnvdUScpe:2.3:a:netapp:snapcenter:*:*:*:*:*:*:*:*
NuGet jQuery.Validation< 1.19.3osvUSpkg:nuget/jQuery.Validation
npm jquery-validation< 1.19.3osvUSpkg:npm/jquery-validation

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-jxwx-85vp-gvwmRegular Expression Denial of Service in jquery-validation2021-01-13ghsa · osvUS
The GitHub Security Lab team has identified potential security vulnerabilities in jquery.validation. The project contains one or more regular expressions that are vulnerable to ReDoS (Regular Expression Denial of Service) This issue was discovered and reported by GitHub team member @erik-krogh (Erik Krogh Kristensen).

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2021-01-13modified 2026-06-17

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+9608 more

references (21)

External citations — patches, advisories, analysis.

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