En bref
- CVE-2026-8161 est une vulnérabilité ÉLEVÉE (CVSS 7.5) touchant multiparty (pillarjs), multiparty.
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.47%, plus élevée que 41.1% des vulnérabilités.
- Correctif : mettre à jour vers 4.3.0 ou plus récent.
Description
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.
NVD 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.
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