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.
History

Tue, 07 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Lodash lodash-amd
Lodash lodash-es
CPEs cpe:2.3:a:lodash:lodash-amd:*:*:*:*:*:node.js:*:*
cpe:2.3:a:lodash:lodash-es:*:*:*:*:*:node.js:*:*
cpe:2.3:a:lodash:lodash.unset:*:*:*:*:*:node.js:*:*
cpe:2.3:a:lodash:lodash:*:*:*:*:*:node.js:*:*
Vendors & Products Lodash lodash-amd
Lodash lodash-es

Fri, 03 Apr 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Lodash
Lodash lodash
Lodash lodash.unset
Vendors & Products Lodash
Lodash lodash
Lodash lodash.unset

Wed, 01 Apr 2026 23:45:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 01 Apr 2026 02:15:00 +0000

Type Values Removed Values Added
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.
Title lodash vulnerable to Prototype Pollution via array path bypass in `_.unset` and `_.omit`
Weaknesses CWE-1321
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: openjs

Published: 2026-03-31T19:18:35.796Z

Updated: 2026-04-01T13:43:21.491Z

Reserved: 2026-02-21T20:04:35.087Z

Link: CVE-2026-2950

cve-icon Vulnrichment

Updated: 2026-04-01T13:43:18.193Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-31T20:16:26.207

Modified: 2026-04-07T16:12:25.970

Link: CVE-2026-2950

cve-icon Redhat

No data.