EUVD-2026-67929

multer vulnerable to file size limit bypass via async fileFilter race condition...

CVE-2026-77063

multer is a middleware for handling multipart/form-data in Node.js. When an application uses an asynchronous fileFilter together with the fileSize limit, a race condition in multer's file stream handling can allow a file that exceeds the configured size limit to bypass the size-limit rejection. A...

PT-2026-83357

Name of the Vulnerable Software and Affected Versions multer versions prior to 2.3.0 Description A race condition exists in the file stream handling when an application utilizes an asynchronous fileFilter in conjunction with the fileSize limit. This allows files that exceed the configured size...

CVE-2026-18549 @fastify/multipart vulnerable to Denial of Service via aborted upload after fileSize limit

@fastify/multipart is a multipart form-data parser for Fastify. In versions from 5.3.0 up to but not including 10.1.1, when the busboy fileSize limit truncates a file part, the plugin clears its internal current-file reference while the underlying stream is still open. If the client then aborts t...