multer is a Node.js middleware for handling multipart/form-data uploads.
CVE-2026-88932
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.
Assessment
- CVSS
- 5.3 (v3.1)
- Severity
- Medium
- EPSS
- 0.53% chance of exploitation in the next 30 days
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 14 September 2026
- Last updated
- 16 September 2026
- Weakness
- CWE-400, CWE-459
- Assigner
- ce714d77-add3-4f53-aff5-83d477b104bb
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
At the source
References
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