#VU116665 Resource exhaustion in Rack - CVE-2025-61772

Vulnerability identifier: #VU116665

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-61772

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Rack
Web applications / Modules and components for CMS

Vendor: Rack

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources in Rack::Multipart::Parser when handling multipart headers. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Rack: 2.0 - 2.0.9.4, 2.1.0 - 2.1.4.4, 2.2.0 - 2.2.19, 3.0.0 - 3.0.18, 3.1.0 - 3.1.17, 3.2.0 - 3.2.2

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External links
https://github.com/rack/rack/security/advisories/GHSA-wpv5-97wm-hp9c

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?