CVE-2022-37599Network attack vector

Build interruption via backtracking resource-path regex

Published Oct 11, 2022 · Updated Nov 4, 2025

Regular expression denial of service in webpack loader-utils 2.0.0 allows attackers to interrupt builds via a crafted resource path. interpolateName applies its hash-placeholder regex to resourcePath while the hash-type capture accepts opening brackets, enabling excessive backtracking. The calling loader must pass an attacker-controlled resource path; processing can consume disproportionate CPU or crash the host process.

CVSS severity7.5
High
EPSS probability2.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Regular expression denial of service in webpack loader-utils 2.0.0 allows attackers to interrupt builds via a crafted resource path. interpolateName applies its hash-placeholder regex to resourcePath while the hash-type capture accepts opening brackets, enabling excessive backtracking. The calling loader must pass an attacker-controlled resource path; processing can consume disproportionate CPU or crash the host process.

The record

CVE
CVE-2022-37599
Published
Oct 11, 2022
Updated
Nov 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1333, CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1333Inefficient Regular Expression Complexity
CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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