#VU116144 Resource exhaustion in Rack - CVE-2025-59830

Vulnerability identifier: #VU116144

Vulnerability risk: High

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:Amber]

CVE-ID: CVE-2025-59830

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 the "Rack::QueryParser" function. 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: 2.2.0 - 2.2.18

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External links
https://github.com/rack/rack/commit/54e4ffdd5affebcb0c015cc6ae74635c0831ed71
https://github.com/rack/rack/security/advisories/GHSA-625h-95r8-8xpm

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?