CVEvulnerability

CVE-2026-8161

7.5 HIGH Published 2026-05-12 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-05-12
Last modified
2026-06-17
Assigner
ce714d77-add3-4f53-aff5-83d477b104bb
CVSS 3.1 (ce714d77-add3-4f53-aff5-83d477b104bb)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-1321, CWE-248

Description

[email protected] and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a field name that collides with an inherited Object.prototype property such as __proto__, constructor, or toString, the parser invokes .push() on the inherited prototype value rather than an array, throwing a TypeError that propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to [email protected] or higher.

Affected configurations

• pillarjs multiparty (< 4.3.0)

Related

Weakness · CWE (2)

  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes weakness
  • CWE-248 Uncaught Exception weakness

References