What’s Vulnerable › Vulnerabilities

CVE-2021-43306: Exponential ReDoS in jquery-validation

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-06-02 · updated 2026-06-17
• Weakness: CWE-1333

Description

An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the jquery-validation npm package, when an attacker is able to supply arbitrary input to the url2 method

Affected products

• jquery-validation: before 1.19.4 — fixed in 1.19.4

How to fix

Upgrade to a fixed version: jquery-validation 1.19.4. Check the vendor advisory for mitigations.

References

• https://research.jfrog.com/vulnerabilities/jquery-validation-redos-xray-211348/
• https://research.jfrog.com/vulnerabilities/jquery-validation-redos-xray-211348/

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