CVE-2025-13465: Prototype Pollution Vulnerability in Lodash _.unset and _.omit functions

Published Jan 21, 2026
·
Updated

Impact

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.

Patches

This issue is patched on 4.17.23.

Other sources

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.

— Launchpad

Affected Software

9 affected componentsFixes available
npm/lodash>=4.0.0<=4.17.22
npm/lodash-amd>=4.0.0<=4.17.22
4.17.23
npm/lodash-es>=4.0.0<=4.17.22
4.17.23
npm/lodash.unset>=4.0.0<=4.5.2
npm/lodash>=4.0.0<=4.17.22
4.17.23
debian/node-lodash<=4.17.21+dfsg+~cs8.31.173-1, <=4.17.21+dfsg+~cs8.31.198.20210220-9
4.18.1+dfsg-3
Lodash Lodash Node.js>=4.0.0<4.17.23
IBM Db2 Genius Hub<=1.1, 1.1.1, 1.1.2
IBM Agentics<=1.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade npm/lodash-amd to a version that resolves this vulnerability.

    Fixed in 4.17.23
  2. Upgrade

    Upgrade npm/lodash-es to a version that resolves this vulnerability.

    Fixed in 4.17.23
  3. Upgrade

    Upgrade npm/lodash to a version that resolves this vulnerability.

    Fixed in 4.17.23
  4. Upgrade

    Upgrade debian/node-lodash to a version that resolves this vulnerability.

    Fixed in 4.18.1+dfsg-3
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 4.17.23

Event History

Jan 21, 2026
CVE Published
via MITRE·07:05 PM
Data Sourced
via MITRE·07:05 PM
DescriptionWeakness
Data Sourced
via Red Hat·08:01 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·08:16 PM
DescriptionSeverityWeaknessAffected Software
Advisory Published
via GitHub·11:01 PM
Data Sourced
via GitHub·11:01 PM
DescriptionSeverityWeaknessAffected Software
Jun 9, 2026
Data Sourced
via Debian·06:09 PM
DescriptionAffected Software
Data Sourced
via Launchpad·06:09 PM
Description
Jun 10, 2026
Data Sourced
via Ubuntu·06:08 PM
RemedyDescriptionSeverityAffected Software
Jul 13, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2025-13465?

CVE-2025-13465 is considered a medium severity vulnerability.

2

How do I fix CVE-2025-13465?

To fix CVE-2025-13465, upgrade Lodash to a version greater than 4.17.22.

3

What functionality is impacted by CVE-2025-13465 in Lodash?

CVE-2025-13465 impacts the _.unset and _.omit functions in Lodash.

4

What can an attacker do with CVE-2025-13465?

An attacker can use CVE-2025-13465 to delete methods from global prototypes by exploiting crafted paths.

5

Which versions of Lodash are affected by CVE-2025-13465?

Lodash versions from 4.0.0 to 4.17.22 are affected by CVE-2025-13465.

Company

Resources

Contact

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CVE-2025-13465 - Prototype Pollution Vulnerability in Lodash _.unset and _.omit functions - SecAlerts