VulnerabilityAnalyzed

CVE-2026-2950

Impact: Lodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions.

MEDIUM 5.3EPSS 0.32%

Does this matter?

Lower severity and a low EPSS score (0.32%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.32% probability · 25th percentile
CISA KEV: Not listed
Weakness: CWE-1321
Affected: lodash/lodash · lodash/lodash-amd · lodash/lodash-es · lodash/lodash.unset
Source: ce714d77-add3-4f53-aff5-83d477b104bb

References

https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpgVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.