Medium severity5.3NVD Advisory· Published Sep 14, 2026· Updated Sep 16, 2026
CVE-2026-88932
CVE-2026-88932
Description
multer is a Node.js middleware for handling multipart/form-data uploads. In versions 2.2.0 through 2.3.0, when a request using disk storage is aborted mid-upload, file writes that complete after multer has already run its abort cleanup are not removed, so each aborted upload can leave an orphaned file on disk. A remote unauthenticated attacker can repeatedly start and abort uploads to accumulate orphaned files and exhaust disk space, causing a denial of service. The issue is fixed in multer 2.4.0, and users should upgrade to 2.4.0 or later.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
multernpm | >= 2.2.0, < 2.4.0 | 2.4.0 |
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-3pph-fpjx-jg34ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-88932ghsaADVISORY
- cna.openjsf.org/security-advisories.htmlnvdWEB
- github.com/expressjs/multer/commit/53337f9713619ef3381ee6b4e541f926dbaac305ghsaWEB
- github.com/expressjs/multer/releases/tag/v2.4.0ghsaWEB
- github.com/expressjs/multer/security/advisories/GHSA-3pph-fpjx-jg34nvdWEB
News mentions
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