Vulnerability GHSA-xxjr-mmjv-4gpg

Medium Risk
MEDIUM RISK
CVSS Score: 6.5
Score Range: 4.0–6.9
Medium severity vulnerabilities (CVSS 4.0–6.9). Important issues that meaningfully reduce security confidence.
8 months ago
January 21, 2026 at 11:01 PM UTC
Lodash has Prototype Pollution Vulnerability in `_.unset` and `_.omit` functions
4.0.0 - 4.17.21
4.0.0 - 4.17.21

Summary

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

Details

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.

Timeline

Published
8 months ago
January 21, 2026 at 11:01 PM UTC
Fixed (4.17.23)
8 months ago
January 21, 2026 at 05:04 PM UTC
Fixed (4.17.23)
8 months ago
January 21, 2026 at 05:28 PM UTC
Fixed (4.17.23)
8 months ago
January 21, 2026 at 05:29 PM UTC
Last Modified
16 hours ago
October 17, 2026 at 02:55 AM UTC