๐Ÿ›ก๏ธ CVE-2026-46510
๐ŸŸ  CVSS 8.2 โ€” High โœ… No Known Exploit CWE-1321 NVD
8.2
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 8.2
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
CWE CWE-1321
Public Exploit โœ… No
Source NVD
Published 2026-05-18
Updated 2026-06-10
Modified 2026-06-09
Fix URL N/A

Affected Packages

Software From version Fixed in
form-data-objectizer โ€” โ€”
unknown โ€” โ€”

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