7.5

CVE-2026-5038

multer vulnerable to Denial of Service via incomplete cleanup of aborted uploads

Impact: multer versions 2.0.0-alpha.1 through 2.1.1 and 3.0.0-alpha.1 are vulnerable to a Denial of Service when using diskStorage. Aborted or malformed multipart uploads leave orphaned partial files on disk because the Readable.pipe() call does not propagate the stream destroy signal to 
the underlying fs.WriteStream. An attacker can exhaust disk space by triggering many aborted uploads, with no application bug required.

Patches: Users should upgrade to multer 2.2.0 (2.x line) or 3.0.0-alpha.2 (3.x prerelease). Both versions track in-flight write streams and clean them up on the abort path.

Workarounds: None.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Expressjs ≫ Multer SwPlatformnode.js Version >= 2.0.0 < 2.2.0
Expressjs ≫ Multer Version3.0.0 Updatealpha1 SwPlatformnode.js
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.28% 0.194
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
ce714d77-add3-4f53-aff5-83d477b104bb 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-459 Incomplete Cleanup

The product does not properly "clean up" and remove temporary or supporting resources after they have been used.

https://cna.openjsf.org/security-advisories.html
Vendor Advisory
https://github.com/expressjs/multer/security/advisories/GHSA-3p4h-7m6x-2hcm
Vendor Advisory