#VU111989 Resource exhaustion in Rack - CVE-2025-46727

Vulnerability identifier: #VU111989

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-2025-46727

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. 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, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.0.9.1, 2.0.9.2, 2.0.9.3, 2.0.9.4, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.4.1, 2.1.4.2, 2.1.4.3, 2.1.4.4, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.3.1, 2.2.4, 2.2.5, 2.2.6, 2.2.6.1, 2.2.6.2, 2.2.6.3, 2.2.6.4, 2.2.7, 2.2.8, 2.2.8.1, 2.2.9, 2.2.10, 2.2.11, 2.2.12, 2.2.13, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.4.1, 3.0.4.2, 3.0.5, 3.0.6, 3.0.6.1, 3.0.7, 3.0.8, 3.0.9, 3.0.9.1, 3.0.10, 3.0.12, 3.0.13, 3.0.14, 3.0.15, 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.8, 3.1.9, 3.1.10, 3.1.11, 3.1.12, 3.1.13

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External links
https://github.com/rack/rack/commit/2bb5263b464b65ba4b648996a579dbd180d2b712
https://github.com/rack/rack/commit/3f5a4249118d09d199fe480466c8c6717e43b6e3
https://github.com/rack/rack/commit/cd6b70a1f2a1016b73dc906f924869f4902c2d74
https://github.com/rack/rack/security/advisories/GHSA-gjh7-p2fx-99vx

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.