CVE-2026-34221
Published: Mar 31, 2026
Modified: Mar 31, 2026
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.
| Vendor | Product | Versions |
|---|---|---|
mikro-orm | mikro-orm | affected < 6.6.10affected >= 7.0.0-rc.0, < 7.0.6 |
Weaknesses (CWE)
References
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