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GeekWala

CVE-2025-13465

MEDIUM

Lodash has Prototype Pollution Vulnerability in `_.unset` and `_.omit` functions

Published January 21, 2026Updated July 8, 2026Source: osv

What Should I Do?

Address in Next Maintenance Window

Low exploitation probability (0.03%). Schedule for your next planned update.

Summary

### 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.

Remediation

Upgrade to the fixed version using your package manager.

npm
Update lodash to 4.17.23 or later
npm install lodash@4.17.23
npm
Update lodash-es to 4.17.23 or later
npm install lodash-es@4.17.23
npm
Update lodash-amd to 4.17.23 or later
npm install lodash-amd@4.17.23

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (4)

PackageEcosystemAffectedFixed In
lodash
npm
All versions4.17.23
lodash.unset
npm
All versionsRange-based data available
lodash-es
npm
All versions4.17.23
lodash-amd
npm
All versions4.17.23

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-1321
    Prototype PollutionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 6.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

References

Frequently Asked Questions

What is CVE-2025-13465?
Lodash has Prototype Pollution Vulnerability in `_.unset` and `_.omit` functions This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 6.5/10).
How do I check if my project is affected by CVE-2025-13465?
CVE-2025-13465 affects lodash, lodash.unset and lodash-es (and 1 more). It has a 0.03% probability of exploitation within 30 days (EPSS score). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-13465 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
6.5

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

EPSS Score (30-day exploit probability)
0.03%
Higher than 7% of vulnerabilities

Also Known As

GHSA-xxjr-mmjv-4gpg
CVE-2026-2950
GHSA-f23m-r3pf-42rh

Related CVEs

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