CVE-2026-25047
Unknown Unknown - Not Provided
Prototype Pollution in deephas 1.0.7 Allows Global Object Modification

Publication date: 2026-01-29

Last updated on: 2026-02-25

Assigner: GitHub, Inc.

Description
deepHas provides a test for the existence of a nested object key and optionally returns that key. A prototype pollution vulnerability exists in version 1.0.7 of the deephas npm package that allows an attacker to modify global object behavior. This issue was fixed in version 1.0.8.
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Meta Information
Published
2026-01-29
Last Modified
2026-02-25
Generated
2026-06-16
AI Q&A
2026-01-30
EPSS Evaluated
2026-06-15
NVD
CVE-2026-25047
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
sharpred deephas 1.0.7
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-1321 The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
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Executive Summary

This vulnerability is a prototype pollution issue in version 1.0.7 of the deephas npm package. It allows an attacker to modify the global object behavior by exploiting the deepHas function, which tests for the existence of a nested object key and optionally returns that key. This can lead to unexpected behavior in applications using this package. The issue was fixed in version 1.0.8.

Impact Analysis

The vulnerability can allow an attacker to alter the global object behavior in applications using the affected deephas package version. This can lead to severe security issues such as unauthorized code execution, data manipulation, or application instability, potentially compromising the integrity and security of the affected system.

Mitigation Strategies

Upgrade the deephas npm package to version 1.0.8 or later, as this version contains the fix for the prototype pollution vulnerability present in version 1.0.7.

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