Resource exhaustion in Rack

1) Resource exhaustion

EUVDB-ID: #VU111989

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 - Resource exhaustion

Exploit availability: No

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 update from vendor's website.

Vulnerable software versions

Rack: 2.0 - 3.1.13

CPE2.3

• cpe:2.3:a:rack:rack:2.0:*:*:*:*:ruby:*:*
• cpe:2.3:a:rack:rack:2.0.0:*:*:*:*:ruby:*:*
• cpe:2.3:a:rack:rack:2.0.1:*:*:*:*:ruby:*:*
• cpe:2.3:a:rack:rack:2.0.2:*:*:*:*:ruby:*:*
• cpe:2.3:a:rack:rack:2.0.3:*:*:*:*:ruby:*:*
• cpe:2.3:a:rack:rack:2.0.4:*:*:*:*:ruby:*:*
• cpe:2.3:a:rack:rack:2.0.5:*:*:*:*:ruby:*:*
• cpe:2.3:a:rack:rack:2.0.6:*:*:*:*:ruby:*:*
• cpe:2.3:a:rack:rack:2.0.7:*:*:*:*:ruby:*:*
• cpe:2.3:a:rack:rack:2.0.8:*:*:*:*:ruby:*:*

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

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.