{"schemaVersion":3,"id":"CVE-2026-8161","aliases":["UBUNTU-CVE-2026-8161","DEBIAN-CVE-2026-8161","GHSA-qxch-whhj-8956"],"status":"published","duplicateOf":null,"title":null,"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. 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