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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-88932

multer vulnerable to Denial of Service via orphaned disk writes on aborted uploads

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
openjs

Description

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 each aborted upload can leave an orphaned file on disk. A remote unauthenticated attacker can repeatedly start and abort uploads to accumulate orphaned files and exhaust disk space, causing a denial of service. The issue is fixed in multer 2.4.0, and users should upgrade to 2.4.0 or later.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

multer multer

Default version status: unaffected

  • 2.2.0 to < 2.4.0affected
  • 2.4.0unaffected
pkg:npm/multer

References