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CVE-2026-92230

Apache Karaf: Improper release of ClassLoader references via static ThreadLocal caching

Published: Sep 17, 2026Updated: Sep 18, 2026 Sources: CVE List NVDCWE-401
7.5HIGH
NVD MITRE
EPSS Score
0.4%
Top 66.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-401CWE-772

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache KarafLibrary
OSS Libraries / generic-library

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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References

https://lists.apache.org/thread/pxgqjvsmzgpvgly1qf1w300qxsp8bxdj
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/09/17/3
openwall.com

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