Apache Karaf's XmlUtils cached XML parser/transformer factories in static ThreadLocal fields on long-lived container threads. Because a ThreadLocal value outlives the OSGi bundle that created it, repeated bundle or feature install, update, or refresh operations can leave successive bundle ClassLoader's pinned in memory and unreachable for garbage collection, leading to unbounded Metaspace growth and eventual denial of service of the Karaf instance.

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Fri, 18 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 17 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
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Thu, 17 Sep 2026 19:00:00 +0000

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Description Apache Karaf's XmlUtils cached XML parser/transformer factories in static ThreadLocal fields on long-lived container threads. Because a ThreadLocal value outlives the OSGi bundle that created it, repeated bundle or feature install, update, or refresh operations can leave successive bundle ClassLoader's pinned in memory and unreachable for garbage collection, leading to unbounded Metaspace growth and eventual denial of service of the Karaf instance.
Title Apache Karaf: Improper release of ClassLoader references via static ThreadLocal caching
Weaknesses CWE-401
CWE-772
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-09-18T13:33:04.842Z

Reserved: 2026-09-15T19:05:23.880Z

Link: CVE-2026-92230

cve-icon Vulnrichment

Updated: 2026-09-17T19:11:48.291Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-17T19:17:06.897

Modified: 2026-09-18T17:48:19.003

Link: CVE-2026-92230

cve-icon Redhat

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Weaknesses