CVE-2026-46509CWE-1321

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

High · published May 28, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
37.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00446 · 37.8th percentile
Weakness
CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Published
2026-05-28T17:52Z
EPSS history
Timeline
  • 28 MAY 17:52Z
    deepobj: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
    cvelistv5