CVE-2026-46510
CVE-2026-46510 · Prototype pollution in form-data-objectizer via bracket-notation form keys
This page contains facts from public vulnerability sources. Check the original advisory before updating.
form-data-objectizer converts FormData to object. Prior to 1.0.1, form-data-objectizer walks bracket-notation form keys (e.g. name[sub]) into nested objects without filtering __proto__, constructor, or prototype. A single HTTP form field whose name starts with __proto__[...] causes the library to mutate Object.prototype, which is a prototype pollution primitive of the entire Node.js process. This vulnerability is fixed in 1.0.1.
CVSS 8.2 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
form-data-objectizer
- Versions
- < 1.0.1: Affected
No fix published
form-data-objectizer npm
- Affected ranges
- SEMVER: < 1.0.1
Update to 1.0.1