CVE-2026-54737
@phun-ky/defaults-deep Has a Prototype Pollution issue via Unsafe Recursive Property Merging
- State
- Published
- Severity
- 7.3 High
- Published
- Jul 31, 2026
- Updated
- Jul 31, 2026
- Reserved
- Jun 15, 2026
Description
@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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.3 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | GitHub_M |
Weaknesses
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Products
| Product | Versions |
|---|---|
defaults-deepphun-ky |
|
References
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