All vulnerabilities

CVE-2025-47944

Multer vulnerable to Denial of Service from maliciously crafted requests

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

Patch Available

Fix available through Seal Security. 

No upgrade required, protect your application instantly.

Fix without upgrading
Score
7.5
Severity
High
Ecosystem
JavaScript
Publish Date
May 19, 2025
Modified Date
February 3, 2026
Score Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Versions