CVE-2021-21252

Regular expression denial of service in jquery-validation

HIGH
7.5
CVSS Score
Published: January 13, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:35 AM UTC
2 products affected across 2 vendorsSnapCenterJqueryvalidation

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Severity
HIGH7.5
Exploit prediction
EPSS 4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.19.3
Affected range stops below 1.19.3, so it looks safe — our inference, not a vendor statement
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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