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Vulnerability details: VCID-a286-32jj-eubk
Vulnerability ID VCID-a286-32jj-eubk
Aliases CVE-2021-21252
GHSA-jxwx-85vp-gvwm
Summary Regular Expression Denial of Service in jquery-validation 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).
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-400 Uncontrolled Resource Consumption
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-21252.json
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
epss 0.007 https://api.first.org/data/v1/epss?cve=CVE-2021-21252
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-jxwx-85vp-gvwm
cvssv3.1 7.5 https://github.com/jquery-validation/jquery-validation
generic_textual HIGH https://github.com/jquery-validation/jquery-validation
cvssv3.1 7.5 https://github.com/jquery-validation/jquery-validation/commit/5d8f29eef363d043a8fec4eb86d42cadb5fa5f7d
generic_textual HIGH https://github.com/jquery-validation/jquery-validation/commit/5d8f29eef363d043a8fec4eb86d42cadb5fa5f7d
cvssv3.1 7.5 https://github.com/jquery-validation/jquery-validation/pull/2371
generic_textual HIGH https://github.com/jquery-validation/jquery-validation/pull/2371
cvssv3.1 7.5 https://github.com/jquery-validation/jquery-validation/security/advisories/GHSA-jxwx-85vp-gvwm
cvssv3.1_qr HIGH https://github.com/jquery-validation/jquery-validation/security/advisories/GHSA-jxwx-85vp-gvwm
generic_textual HIGH https://github.com/jquery-validation/jquery-validation/security/advisories/GHSA-jxwx-85vp-gvwm
cvssv3.1 7.5 https://jqueryvalidation.org/#installation-via-package-managers
generic_textual HIGH https://jqueryvalidation.org/#installation-via-package-managers
cvssv3.1 7.5 https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html
generic_textual HIGH https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-21252
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2021-21252
cvssv3.1 7.5 https://securitylab.github.com/advisories/GHSL-2020-294-redos-jquery-validation
generic_textual HIGH https://securitylab.github.com/advisories/GHSL-2020-294-redos-jquery-validation
cvssv3.1 7.5 https://security.netapp.com/advisory/ntap-20210219-0005
generic_textual HIGH https://security.netapp.com/advisory/ntap-20210219-0005
cvssv3.1 7.5 https://www.npmjs.com/package/jquery-validation
generic_textual HIGH https://www.npmjs.com/package/jquery-validation
cvssv3.1 7.5 https://www.nuget.org/packages/jquery.validation
generic_textual HIGH https://www.nuget.org/packages/jquery.validation
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-21252.json
https://api.first.org/data/v1/epss?cve=CVE-2021-21252
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21252
https://github.com/jquery-validation/jquery-validation
https://github.com/jquery-validation/jquery-validation/commit/5d8f29eef363d043a8fec4eb86d42cadb5fa5f7d
https://github.com/jquery-validation/jquery-validation/pull/2371
https://github.com/jquery-validation/jquery-validation/security/advisories/GHSA-jxwx-85vp-gvwm
https://jqueryvalidation.org/#installation-via-package-managers
https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html
https://nvd.nist.gov/vuln/detail/CVE-2021-21252
https://securitylab.github.com/advisories/GHSL-2020-294-redos-jquery-validation
https://securitylab.github.com/advisories/GHSL-2020-294-redos-jquery-validation/
https://security.netapp.com/advisory/ntap-20210219-0005
https://security.netapp.com/advisory/ntap-20210219-0005/
https://www.npmjs.com/package/jquery-validation
https://www.nuget.org/packages/jquery.validation
2096941 https://bugzilla.redhat.com/show_bug.cgi?id=2096941
980891 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980891
980892 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980892
GHSA-jxwx-85vp-gvwm https://github.com/advisories/GHSA-jxwx-85vp-gvwm
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-21252.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/jquery-validation/jquery-validation
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/jquery-validation/jquery-validation/commit/5d8f29eef363d043a8fec4eb86d42cadb5fa5f7d
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/jquery-validation/jquery-validation/pull/2371
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/jquery-validation/jquery-validation/security/advisories/GHSA-jxwx-85vp-gvwm
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://jqueryvalidation.org/#installation-via-package-managers
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-21252
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://securitylab.github.com/advisories/GHSL-2020-294-redos-jquery-validation
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://security.netapp.com/advisory/ntap-20210219-0005
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.npmjs.com/package/jquery-validation
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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none

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required

unchanged

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.nuget.org/packages/jquery.validation
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

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Exploit Prediction Scoring System (EPSS)
Percentile 0.71951
EPSS Score 0.007
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:01:04.586321+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/01/GHSA-jxwx-85vp-gvwm/GHSA-jxwx-85vp-gvwm.json 38.0.0