CVE-2026-34221Critical· 9.1▾ MidnightMikroORM 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 w…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 50.1 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Jul 24.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
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.
mikroorm < 6.6.10mikroorm >= 7.0.0, < 7.0.6Upgrade past the affected range:
mikroorm 7.0.6Connected by shared product, vendor, weakness, or advisory.
CVE-2026-34220Critical· 9.8MikroORM is a TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns
CVE-2026-84993Medium· 6.5MikroORM is a TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns
CVE-2026-73562Medium· 6.5Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment
CVE-2026-93753High· 7.5deepmerge through 4.3.1 contains a prototype poisoning vulnerability in the mergeObject() function that fails to properly validate keys being written to target objects
CVE-2026-92779High· 7.6Builder.io Gen2 SDKs through versions 5.2.11 and 0.25.13 contain a prototype pollution vulnerability in the deep-set helper function that processes content block bindings without validation
CVE-2026-92781Medium· 6.3Builder.io Gen2 SDKs through versions 5.2.11 and 0.25.13 contain a prototype pollution vulnerability in the unflatten helper that processes builder.userAttributes query parameters without prototype guards