Bug 2566837 (CVE-2026-100300) - CVE-2026-100300 zookeeper: zookeeper: Denial of Service via improper exception handling in quota subsystem
Summary: CVE-2026-100300 zookeeper: zookeeper: Denial of Service via improper exceptio...
Keywords:
Status: NEW
Alias: CVE-2026-100300
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-04 10:58 UTC by OSIDB Bzimport
Modified: 2026-11-06 16:27 UTC (History)
0 users

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Description OSIDB Bzimport 2026-11-04 10:58:09 UTC 
Improper handling of exceptional conditions in the quota subsystem of Apache ZooKeeper allows an attacker able to write under the /zookeeper/quota subtree — unauthenticated on default deployments, where that subtree is world-writable — to crash the server's critical request-processing thread and render the on-disk data directory permanently unbootable.

This issue affects Apache ZooKeeper up to and including 3.9.6. Users are recommended to upgrade to version 3.8.8 or 3.9.7, which fixes the issue.
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