CVE-2025-49007

Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.16, there is a denial of service vulnerability in the Content-Disposition parsing component of Rack. This is very similar to the previous security issue CVE-2022-44571. Carefully crafted input can cause Content-Disposition header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is used typically used in multipart parsing. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted. Version 3.1.16 contains a patch for the vulnerability.

Affected products

Rack

Rack

< 3.1.16

Fix

Available

CVSS 4.0

8.7 HIGH

CVSS 3.1

5.3 MEDIUM

EPSS

0.5% (39th percentile)

Weakness

CWE-1333, CWE-770

NVD status

Analyzed

Published

2025-06-04

No exploit for CVE-2025-49007 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.