node-multiparty: multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception
CVE-2026-8161 is fixed in node-multiparty on 1 platform by DEBIAN-CVE-2026-8161 (version 4.3.0-1), released May 27, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-multiparty · Debian 14 | 4.3.0-1 | DEBIAN-CVE-2026-8161 | May 27, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.