15 results · Feed
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High 7.5CVE-2026-113872 Public exploit
multer vulnerable to Denial of Service via a pending asynchronous fileFilter after request teardown
multer is a middleware for Node.js that handles multipart/form-data file uploads. In versions from 2.0.0 before 2.5.0, when multer is configured with an asynchronous fileFilter, a single request can crash the Node.js process. If the request is aborted while o…
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Medium 5.3
multer vulnerable to Denial of Service via orphaned disk writes on aborted uploads
multer is a Node.js middleware for handling multipart/form-data uploads. In versions 2.2.0 through 2.3.0, when a request using disk storage is aborted mid-upload, file writes that complete after multer has already run its abort cleanup are not removed, so eac…
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High 7.5
multer vulnerable to Denial of Service via oversized array index in field names
multer is a middleware for handling multipart/form-data in Node.js. A small multipart request with two specially crafted text field names can make multer's field parser synchronously iterate a maximum-length sparse array, blocking the event loop so the proces…
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High 7.5CVE-2026-77078 Public exploit
multer vulnerable to Denial of Service via crafted multipart field names
multer is a middleware for handling multipart/form-data in Node.js. A small multipart request containing two specially crafted text field names can cause an uncaught RangeError (Invalid array length) that terminates the Node.js process. The first field uses a…
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Low 3.7
multer vulnerable to file size limit bypass via async fileFilter race condition
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…
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High 7.5
multer vulnerable to Denial of Service via file descriptor leak on aborted uploads
multer is a middleware for handling multipart/form-data in Node.js. In version 2.2.0, when a disk-backed upload is aborted or truncated before the write stream finishes, multer's disk storage engine removes the visible file but does not close the underlying w…
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Medium 5.3
multer vulnerable to Denial of Service via incomplete cleanup of aborted uploads
Impact: multer versions 2.0.0-alpha.1 through 2.1.1 and 3.0.0-alpha.1 are vulnerable to a Denial of Service when using diskStorage. Aborted or malformed multipart uploads leave orphaned partial files on disk because the Readable.pipe() call does not propagate…
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High 7.5
multer vulnerable to Denial of Service via deeply nested field names
Impact: multer versions 1.0.0 through 2.1.1 and 3.0.0-alpha.1 are vulnerable to a Denial of Service via deeply nested field names in multipart form data. The append-field dependency parses bracket notation in field names with no limit on nesting depth, allowi…
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High 8.7
Multer vulnerable to Denial of Service via uncontrolled recursion
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow. Users should upgrade…
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High 8.7CVE-2026-3304 Public exploit
Multer vulnerable to Denial of Service via incomplete cleanup
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing resource exhaustion. Users should up…
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High 8.7
Multer vulnerable to Denial of Service via resource exhaustion
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by dropping connection during file upload, potentially causing resource exhaustion. Use…
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High 7.5CVE-2025-7338 Public exploit
Multer vulnerable to Denial of Service via unhandled exception from malformed request
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.2 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload requ…
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High 8.7
Multer vulnerable to Denial of Service via unhandled exception
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an emp…
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High 7.5
Multer vulnerable to Denial of Service from maliciously crafted requests
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.0 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload requ…
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High 7.5
Multer vulnerable to Denial of Service via memory leaks from unclosed streams
Multer is a node.js middleware for handling `multipart/form-data`. Versions prior to 2.0.0 are vulnerable to a resource exhaustion and memory leak issue due to improper stream handling. When the HTTP request stream emits an error, the internal `busboy` stream…