CVE-2025-47944
Multer vulnerable to Denial of Service from maliciously crafted requests
7.5
HIGH
CVSS 3.1
EPSS 0.04%
Description
### Impact A vulnerability in Multer versions >=1.4.4-lts.1 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload request. This request causes an unhandled exception, leading to a crash of the process. ### Patches Users should upgrade to `2.0.0` ### Workarounds None ### References - https://github.com/expressjs/multer/issues/1176 - https://github.com/expressjs/multer/commit/2c8505f207d923dd8de13a9f93a4563e59933665
How to fix CVE-2025-47944
To remediate CVE-2025-47944, upgrade the affected package to a fixed version below.
- —upgrade to 2.0.0 or later
Is CVE-2025-47944 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 1.4.4-lts.1, < 2.0.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |