CVE-2026-45302 | BDVDB-2026-337108 Detail

Description#

parse-nested-form-data is a tiny node module for parsing FormData by name into objects and arrays. Prior to version 1.0.1, parseFormData() walks bracket and dot-notation FormData field names into nested objects without filtering reserved property keys. A single FormData field whose name begins with __proto__, or contains .__proto__. mid-path, causes the parser to traverse onto Object.prototype and assign properties there, polluting the prototype chain of every plain object in the running process. This issue has been patched in version 1.0.1.

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Exploit#

History#

1. Version 12026-06-01Record published in the CVE List.
2. Version 22026-06-02Most recent update recorded in the CVE List.