Uncontrolled Recursion in Apache Commons Configuration - CVE-2026-45205

Vulnerability identifier: #VU145310

CSH Severity: Low

CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-45205

CWE-ID: CWE-674

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled recursion in the YAML configuration parser when processing an untrusted configuration file containing cyclic YAML input. A remote attacker can supply a specially crafted configuration file to cause a denial of service.

Apache Commons Configuration
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Development Tools Module
apache-commons-text
apache-commons-configuration2

Install security update from vendor's website.

Apache Commons Configuration - update to 2.15.0
apache-commons-text - update to 1.15.0-150200.5.14.1
apache-commons-configuration2 - update to 2.15.0-150200.5.11.1

• https://lists.apache.org/api/email.lua?id=3c6kqgw3z3s7m96q69y7w6vfsdp2f5qo
• https://github.com/apache/commons-configuration/pull/634

• Uncontrolled Recursion in Apache Commons Configuration
• SUSE update for apache-commons-configuration2, apache-commons-text