Apache Karaf: Improper release of ClassLoader references via static ThreadLocal caching
cve-program · CVE-2026-92230
PublishedApache 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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cve-program · CVE-2026-92230
PublishedApache Karaf: Improper release of ClassLoader references via static ThreadLocal caching
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.
- Source published
- 17 Sep 2026 18:38:29 UTC
- Source modified
- 18 Sep 2026 13:33:04 UTC
- Saved here
- 23 Oct 2026 15:48:27 UTC
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