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.
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.
Metrics
Affected Vendors & Products
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Fixes
Solution
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Workaround
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References
History
Wed, 04 Nov 2026 13:00:00 +0000
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Apache
Apache zookeeper |
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Apache
Apache zookeeper |
Wed, 04 Nov 2026 12:30:00 +0000
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Wed, 04 Nov 2026 11:00:00 +0000
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| Description | 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. | |
| Title | Apache ZooKeeper: Unauthenticated persistent denial of service via unvalidated quota-node data and paths crashing the transaction-apply thread | |
| Weaknesses | CWE-755 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-11-04T11:09:29.613Z
Reserved: 2026-09-25T17:44:40.392Z
Link: CVE-2026-100300
No data.
Status : Received
Published: 2026-11-04T11:17:06.873
Modified: 2026-11-04T12:17:05.170
Link: CVE-2026-100300
No data.
OpenCVE Enrichment
Updated: 2026-11-04T12:45:13Z
Weaknesses