CVE-2026-2359
highpriority · track · 30EPSS 0.007 · 54 %ileDEEUUSEPSS · scored 2026-10-27
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by dropping connection during file upload, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (9)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-0903IBM App Connect Enterprise: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2026-03-29csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM App Connect Enterprise ausnutzen, um einen Denial of Service Angriff durchzuführen.
- WID-SEC-W-2026-2394HCL BigFix (Service Management): Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2026-07-16csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in HCL BigFix (Service Management) ausnutzen, um einen Denial of Service Angriff durchzuführen.
- GHSA-v52c-386h-88mcMulter vulnerable to Denial of Service via resource exhaustion2026-03-01ghsa · osvUS
### 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
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (18)
External citations — patches, advisories, analysis.
- https://cna.openjsf.org/security-advisories.htmlcnnvd
- https://github.com/expressjs/multer/commit/cccf0fe0e64150c4f42ccf6654165c0d66b9adabcnnvd
- https://github.com/expressjs/multer/releasesPatchcnnvd
- https://github.com/expressjs/multer/security/advisories/GHSA-v52c-386h-88mccnnvd
- https://www.cve.org/CVERecord?id=CVE-2026-2359cnnvd
- https://cna.openjsf.org/security-advisories.htmlenisa_euvd
- https://github.com/expressjs/multer/commit/cccf0fe0e64150c4f42ccf6654165c0d66b9adabenisa_euvd
- https://github.com/expressjs/multer/security/advisories/GHSA-v52c-386h-88mcenisa_euvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan