Vulnerability in Expressjs Multer
CVE-2025-47944
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.0 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed mu…
EPSS: 0.007 (46.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Expressjs Multer — versions >=1.4.4-lts.1, <2.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- https://github.com/expressjs/multer/security/advisories/GHSA-4pg4-qvpc-4q3h (x_refsource_CONFIRM)
- https://github.com/expressjs/multer/issues/1176 (x_refsource_MISC)
- https://github.com/expressjs/multer/commit/2c8505f207d923dd8de13a9f93a4563e59933665 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-47944?
- CVE-2025-47944 is a high-severity vulnerability in Expressjs Multer, classified under CWE-248. CVSS score: 7.5/10. Published 2025-05-19.
- How severe is CVE-2025-47944?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-47944 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.