REDHAT-BUG-2431740: High severity npm/lodash vulnerability

Published Jan 21, 2026
·
Updated

Lodash versions 4.0.0 through 4.17.22 are vulnerable to prototype pollution in the .unset and .omit functions. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes.

The issue permits deletion of properties but does not allow overwriting their original behavior.

This issue is patched on 4.17.23

Affected Software

1 affected component
npm/lodash>=4.0.0<=4.17.22

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade lodash to a version that resolves this vulnerability.

    Fixed in 4.17.23

Event History

Jan 21, 2026
Data Sourced
via Red Hat·08:01 PM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of REDHAT-BUG-2431740?

The severity of REDHAT-BUG-2431740 is considered moderate due to the potential risks associated with prototype pollution.

2

How do I fix REDHAT-BUG-2431740?

To fix REDHAT-BUG-2431740, you should upgrade Lodash to a version higher than 4.17.22.

3

Which versions of Lodash are affected by REDHAT-BUG-2431740?

Lodash versions from 4.0.0 through 4.17.22 are affected by REDHAT-BUG-2431740.

4

What functions in Lodash are vulnerable in REDHAT-BUG-2431740?

The vulnerable functions in REDHAT-BUG-2431740 are _.unset and _.omit.

5

What type of attack is facilitated by REDHAT-BUG-2431740?

REDHAT-BUG-2431740 enables attackers to perform prototype pollution attacks by crafting specific paths.

Contact

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