CVE-2022-37601Network attack vector

Object prototype modification via crafted query names

Published Oct 12, 2022 · Updated Oct 28, 2024

Prototype pollution in webpack loader-utils before 1.4.1 and 2.0.0 through 2.0.2 allows attackers to alter parsed query-result objects. The parseQuery function decodes query-parameter names and assigns them into a normal object, so a proto name invokes the inherited prototype setter. The effect is confined to the returned object's prototype and depends on how consuming code uses injected inherited properties.

CVSS severity9.8
Critical
EPSS probability2.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Prototype pollution in webpack loader-utils before 1.4.1 and 2.0.0 through 2.0.2 allows attackers to alter parsed query-result objects. The parseQuery function decodes query-parameter names and assigns them into a normal object, so a proto name invokes the inherited prototype setter. The effect is confined to the returned object's prototype and depends on how consuming code uses injected inherited properties.

The record

CVE
CVE-2022-37601
Published
Oct 12, 2022
Updated
Oct 28, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1321, CAPEC-1, CAPEC-180, CAPEC-77
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 2024Record 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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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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-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
CAPEC-77Manipulating User-Controlled Variables

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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