Vulnerability · Published May 28, 2026 · Assigned by GitHub_M
CVE-2026-46509deepobj: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
High 8.2
In plain English
A high-severity prototype pollution in deepobj from ranfdev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.3%top 75.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @ranfdev/deepobj | 1.0.3 | GHSA-x7q7-fchv-8h2j |
Affected products (as reported)
Weakness: CWE-1321 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
References
- https://github.com/ranfdev/deepobj/security/advisories/GHSA-x7q7-fchv-8h2j x_refsource_CONFIRM