CVE-2022-37259 steal Inefficient Regular Expression Complexity vulnerability via string variable

High 7.5 Published 20 Sep 2022 Updated 28 May 2025

Attackers can cause a denial of service in stealjs by exploiting a Regular Expression Denial of Service flaw in the babel.js component.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-37259?

CVE-2022-37259 is a high-severity denial of service vulnerability in n/a, published on 20 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A Regular Expression Denial of Service (ReDoS) flaw was found in stealjs steal 2.2.4 via the string variable in babel.js.

Weakness: CWE-1333

Which versions are affected by CVE-2022-37259?

2 open source packages ship an affected version, including steal. It affects 1 product.

Package	Affected	Fixed in
`steal` npm	All versions to `2.3.0`	None
`steal` npm	All versions to `2.3.0`	None

Products include Stealjs Steal.

How do I fix CVE-2022-37259?

No fix has been published for CVE-2022-37259 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-37259 being exploited?

There is no known exploitation of CVE-2022-37259 in the wild and no public exploit code.

Sources

Also known as GHSA-rgqx-226f-2xp4.