High 7.3Published Jul 31, 2026

CVE-2026-54737@phun-ky/defaults-deep is a library like lodash defaultsDeep with array preservation and no lodash dependency.

Updated under an hour ago (2026-10-19 09:10 UTC)

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Exploited in the last 30 days

@phun-ky/defaults-deep is a library like lodash defaultsDeep with array preservation and no lodash dependency. Prior to 2.0.5, defaultsDeep() recursively merges user-supplied objects without filtering proto, constructor, and prototype, allowing properties to be written to Object.prototype. This issue is fixed in version 2.0.5.

CVSS: 7.3 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness (CWE): CWE-1321
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Deferred
Record last updated: Sep 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

No affected products are listed yet.

References

https://github.com/phun-ky/defaults-deep/commit/807dba930f8718f9126cad59d949b8fd3539b059
https://github.com/phun-ky/defaults-deep/pull/49
https://github.com/phun-ky/defaults-deep/releases/tag/2.0.5
https://github.com/phun-ky/defaults-deep/security/advisories/GHSA-mj3g-7xcc-x4vh

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.