multiparty: Denial of Service via Prototype Pollution leads to Uncaught Exception

CAO 7.5CVE-2026-8161 · GHSA-qxch-whhj-8956 · Công bố 12/05/2026 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2026-8161 là lỗ hổng mức CAO (CVSS 7.5) ảnh hưởng multiparty (pillarjs), multiparty.
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.47%, cao hơn 41.0% các lỗ hổng khác.
Cách xử lý: cập nhật lên 4.3.0 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
multiparty pillarjs	`< 4.3.0`	`4.3.0`
multiparty npm	`< 4.3.0`	`4.3.0`

Mô tả

Impact

[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 (e.g., __proto__, constructor, 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. Any service accepting multipart uploads via multiparty is affected.

Patches

Users should upgrade to [email protected] or higher.

Workarounds

None.

Mô tả của NVD

[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.