CVE-2026-2950

Published Mar 31, 2026

Last updated 16 days ago

Overview

Description
Impact: Lodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions. The fix for (CVE-2025-13465: https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg) 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. Patches: This issue is patched in 4.18.0. Workarounds: None. Upgrade to the patched version.
Source
ce714d77-add3-4f53-aff5-83d477b104bb
NVD status
Analyzed
Products
lodash, lodash-amd, lodash-es, lodash.unset

Risk scores

CVSS 3.1

Type
Primary
Base score
5.3
Impact score
1.4
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Severity
MEDIUM

Weaknesses

ce714d77-add3-4f53-aff5-83d477b104bb
CWE-1321

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.