Incomplete Cleanup Affecting multer package, versions >=2.0.0-alpha.1 <2.2.0>=3.0.0-alpha.1 <3.0.0-alpha.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-MULTER-17342516
- published16 Jun 2026
- disclosed15 Jun 2026
- creditHamdaanAliQuatil, Franciny Rojas, 0xStrawHat, bhaswanthc, ByamB4, sbouabid-sec, DavidCarliez, JebeenLee
Introduced: 15 Jun 2026
NewCVE-2026-5038 (opens in a new tab)How to fix?
Upgrade multer to version 2.2.0, 3.0.0-alpha.2 or higher.
Overview
Affected versions of this package are vulnerable to Incomplete Cleanup in the diskStorage function. An attacker can exhaust disk space by repeatedly initiating and aborting multipart uploads, causing orphaned partial files to accumulate on disk.