CVE-2026-8161

Description

multiparty@4.2.3 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 multiparty@4.3.0 or higher.

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Produits concernés

• multiparty
• Pillarjs multiparty

Scores CVSS

Faiblesses (CWE)

• CWE-248
• CWE-1321

Références

• https://cna.openjsf.org/security-advisories.html Third Party Advisory
• https://github.com/pillarjs/multiparty/security/advisories/GHSA-qxch-whhj-8956 Vendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories