GHSA-3p4h-7m6x-2hcm
Multer vulnerable to Denial of Service via incomplete cleanup of aborted uploads
At a glance
- Published
- Updated
- CVE
- CVE-2026-5038
- CVSS_V3
- 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
Affected packages
| Package | Versions |
|---|---|
| npm · multer | introduced 2.0.0-alpha.1, fixed 2.2.0 |
| npm · multer | introduced 3.0.0-alpha.1, fixed 3.0.0-alpha.2 |
References
- https://github.com/expressjs/multer/security/advisories/GHSA-3p4h-7m6x-2hcm WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-5038 ADVISORY
- https://cna.openjsf.org/security-advisories.html WEB
- https://github.com/expressjs/multer PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |