CVE-2026-88932
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductMulter
PublishedSep 14, 2026
First seenSep 14, 2026
How to fix
Update
- multer2.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| multernpm | 2.2.0 ≤ v < 2.4.0 | 2.4.0 |
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