Resource exhaustion in Rack - CVE-2025-59830

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Main Vulnerability Database Vulnerabilities #VU116144

Resource exhaustion in Rack - CVE-2025-59830

Published: September 26, 2025


Vulnerability identifier: #VU116144
CSH Severity: High
CVSS v4: 8.7 [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]
CVE-ID: CVE-2025-59830
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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.


Affected software

Rack
Anolis OS
Ubuntu
Fedora
IBM License Metric Tool
pcs (Red Hat package)
pcs-snmp
pcs
ruby-rack (Ubuntu package)
rubygem-rack
IBM Cloud Pak for Multicloud Management

How to mitigate CVE-2025-59830

Install updates from vendor's website.

Rack - update to 2.2.18
IBM License Metric Tool - update to 9.2.42
pcs (Red Hat package) - addressed in versions 0.10.12-6.el8_6.10, 0.10.15-4.el8_8.9, 0.10.18-2.el8_10.7, 0.11.1-10.el9_0.9, 0.11.4-7.el9_2.6, 0.11.7-2.el9_4.5, 0.11.10-1.el9_7.1, 0.12.0-3.el10_0.3, 0.12.1-1.el10_1.1
pcs-snmp - update to 0.10.18-2.0.1
pcs - update to 0.10.18-2.0.1
ruby-rack (Ubuntu package) - addressed in versions 1.6.4-3ubuntu0.2+esm9, 1.6.4-4ubuntu0.2+esm9, 2.0.7-2ubuntu0.1+esm8, 2.1.4-5ubuntu1.2, 2.2.7-1ubuntu0.4, 2.2.7-1ubuntu0.5, 2.2.7-1.1ubuntu0.25.04.3, 3.1.16-0.1ubuntu0.1
rubygem-rack - addressed in versions 2.2.21-1.fc41, 2.2.21-9.fc42
IBM Cloud Pak for Multicloud Management - update to 2.3 Fix Pack 12

External References

Related Security Bulletins