CVE-2026-2950 Affecting node-lodash package, versions <4.17.15+dfsg-2ubuntu0.1~esm1


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.4% (33rd percentile)

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  • Snyk IDSNYK-UBUNTU2004-NODELODASH-15918341
  • published10 Jun 2026
  • disclosed31 Mar 2026

Introduced: 31 Mar 2026

CVE-2026-2950  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 node-lodash to version 4.17.15+dfsg-2ubuntu0.1~esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream node-lodash package and not the node-lodash package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

The _.unset and _.omit functions in Lodash are vulnerable to prototype pollution. The fix for CVE-2025-13465 only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype. The issue permits deletion of prototype properties but does not allow overwriting their original behavior. The issue is patched from 4.18.0 to 4.18.1 depending on the package: lodash, lodash-es, and lodash-amd in 4.18.1, and the standalone lodash.unset and lodash.omit packages in 4.18.0.

CVSS Base Scores

version 3.1