CVE-2026-100300 (GCVE-0-2026-100300)
Vulnerability from cvelistv5 – Published: 2026-11-04 10:45 – Updated: 2026-11-04 15:18
VLAI
EPSS
VEX
Title
Apache ZooKeeper: Unauthenticated persistent denial of service via unvalidated quota-node data and paths crashing the transaction-apply thread
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 14:35 UTC
CWE
- CWE-755 - — Improper Handling of Exceptional Conditions
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread.html/09pgg7rcpzz4… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/1… |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apache Software Foundation | Apache ZooKeeper |
Affected:
3.9.0 , ≤ 3.9.6
(maven)
Affected: 3.8.0 , ≤ 3.8.7 (maven) |
guessed |
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