CVE-2026-46509 PUBLISHED

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

Assigner: GitHub_M
Reserved: 14.05.2026 Published: 28.05.2026 Updated: 28.05.2026

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.

Metrics

CVSS 3.1

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

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	ranfdev
Product	deepobj
Versions	Version < 1.0.3 is affected

References

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

Problem Types

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