← CVE Intelligence

CVE-2026-88932

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

Description (CNA)

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 (CNA)

Vendor / productVersions
multer / multeraffected 2.2.0 before 2.4.0; unaffected 2.4.0

CWE

CWE-400, CWE-459

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.