CVE-2026-2359
8.7
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| expressjs | multer | 0.0.0 < 2.1.0 | affected |
Weaknesses
- CWE-772: CWE-772
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
multer: Multer: Denial of Service via dropped file upload connections
Additional References
- https://access.redhat.com/security/cve/CVE-2026-2359
- https://bugzilla.redhat.com/show_bug.cgi?id=2443350
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2359.json
- https://access.redhat.com/errata/RHSA-2026:6174
- https://access.redhat.com/errata/RHSA-2026:6802
References
- https://github.com/expressjs/multer/security/advisories/GHSA-v52c-386h-88mc
- https://www.cve.org/CVERecord?id=CVE-2026-2359
- https://github.com/expressjs/multer/commit/cccf0fe0e64150c4f42ccf6654165c0d66b9adab
- https://cna.openjsf.org/security-advisories.html
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