How severe is GHSA-j9m2-h2pv-wvph?

No CVSS score has been assigned to GHSA-j9m2-h2pv-wvph yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-j9m2-h2pv-wvph?

GHSA-j9m2-h2pv-wvph affects the following packages: jquery-validation (npm). Ecosystems affected: npm.

How do I fix GHSA-j9m2-h2pv-wvph?

Update jquery-validation to 1.19.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j9m2-h2pv-wvph is resolved across your whole dependency graph.

How do I detect GHSA-j9m2-h2pv-wvph in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for jquery-validation, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-j9m2-h2pv-wvph if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is GHSA-j9m2-h2pv-wvph actively exploited in the wild?

Yes. There are 1 known exploit references for GHSA-j9m2-h2pv-wvph, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for GHSA-j9m2-h2pv-wvph?

GHSA-j9m2-h2pv-wvph has an EPSS (Exploit Prediction Scoring System) score of 1.5%, placing it in the 75th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-j9m2-h2pv-wvph?

GHSA-j9m2-h2pv-wvph is classified as CWE-1333 (CWE-1333). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-j9m2-h2pv-wvph published, and has it been updated?

GHSA-j9m2-h2pv-wvph was published on June 3, 2022 and was last updated on November 12, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

Regular expression denial of service in jquery-validationGHSA-j9m2-h2pv-wvph

Fix: jquery-validation/jquery-validation#2428

GHSA-j9m2-h2pv-wvph is a CWE-1333 vulnerability in jquery-validation. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for jquery-validation — see the affected versions and patch details below.

Also known asCVE-2021-43306

Published

Jun 3, 2022

Updated

Nov 12, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

1 known

Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

1.5%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs75th percentile — riskier than 75% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

342other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

jquery-validationnpm

358Kdownloads / week

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 Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`jquery-validation`	all versions	1.19.4`npm install jquery-validation@1.19.4`

Affected Products

1 product · 1 configurations

Application

jquery validationjqueryvalidation

< 1.19.4

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

An exponential ReDoS (Regular Expression Denial of Service) can be trigg…

research.jfrog.comNVDJun 2022

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for jquery-validation, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update jquery-validation to 1.19.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j9m2-h2pv-wvph is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

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