CVE-2026-46509

deepobj: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

State: Published
Severity: 8.2 High
Published: May 28, 2026
Updated: Jun 2, 2026
Reserved: May 14, 2026

Description

deepobj provides get, set, delete deep objects in javascript. Prior to 1.0.3, prototype pollution is possible when property paths contain __proto__/constructor/prototype. The property path must not be exposed as user input. This vulnerability is fixed in 1.0.3.

Scores

CVSS	Score	Vector	Source
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L	GitHub_M

Weaknesses

CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Affected Products

Product	Versions
deepobjranfdev	< 1.0.3Affected

References

https://github.com/ranfdev/deepobj/security/advisories/GHSA-x7q7-fchv-8h2j

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