CVE-2026-92230 — Apache Karaf: Improper release of ClassLoader references via static ThreadLocal caching

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache Karaf	affected 0 before 4.4.11

CWE

CWE-401, CWE-772

References

https://lists.apache.org/thread/pxgqjvsmzgpvgly1qf1w300qxsp8bxdj

ADP enrichment

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/09/17/3

CISA-ADP

No English description supplied.

No references supplied.