Description

MikroORM is a TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Prior to versions 6.6.10 and 7.0.6, a prototype pollution vulnerability exists in the Utils.merge helper used internally by MikroORM when merging object structures. The function did not prevent special keys such as __proto__, constructor, or prototype, allowing attacker-controlled input to modify the JavaScript object prototype when merged. This issue has been patched in versions 6.6.10 and 7.0.6.

INFO

Published Date :

2026-03-31T15:17:45.286Z

Last Modified :

2026-03-31T18:52:43.939Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34221 vulnerability.

Vendors Products
Mikro-orm
  • Mikro-orm
  • Mikroorm
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34221.

URL Resource
https://github.com/mikro-orm/mikro-orm/security/advisories/GHSA-qpfv-44f3-qqx6 cve-icon cve-icon
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CVSS Vulnerability Scoring System

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