expressjs/multer · Security
Multer vulnerable to Denial of Service via incomplete cleanup of aborted uploads
- GHSA ID
- GHSA-3p4h-7m6x-2hcm
- CVE ID
- CVE-2026-5038
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS v3
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
Impact
A vulnerability in Multer allows an attacker to trigger a Denial of Service (DoS) by aborting or sending malformed multipart uploads, causing orphaned partial files to accumulate on disk when using diskStorage.
Patches
Users should upgrade to 2.2.0, 3.0.0-alpha.2 or higher
Workarounds
None
CWEs
- CWE-459 · Incomplete Cleanup