Multer vulnerable to Denial of Service via resource exhaustion
Impact
A vulnerability in Multer versions < 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by dropping connection during file upload, potentially causing resource exhaustion.
Patches
Users should upgrade to 2.1.0
Workarounds
None
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | multer | < 2.1.0 | 2.1.0 |
References
- https://github.com/expressjs/multer/security/advisories/GHSA-v52c-386h-88mc
- https://nvd.nist.gov/vuln/detail/CVE-2026-2359
- https://github.com/expressjs/multer/commit/cccf0fe0e64150c4f42ccf6654165c0d66b9adab
- https://cna.openjsf.org/security-advisories.html
- https://github.com/expressjs/multer
- https://www.cve.org/CVERecord?id=CVE-2026-2359
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-772- Platform
- npm
- Package
multer- Disclosed
- 01.03.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-v52c-386h-88mc - CC BY 4.0
Vulnerability history: multer
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 14
- First → latest
- 05.2025 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 11
- Medium 2
- Low 1
Disclosures per year
- 2025: 4
- 2026: 10
-
Multer vulnerable to Denial of Service via resource exhaustion this entry
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