CVE-2026-83525 (GCVE-0-2026-83525)

Vulnerability from cvelistv5 – Published: 2026-10-28 16:37 – Updated: 2026-11-05 19:04
VLAI
Title
Apache Kafka: Incorrect boolean operator in FetchSnapshot RPC handler allows authenticated network clients to crash the KRaft controller via a malformed request.
Summary
Incorrect operator (CWE-480) in the FetchSnapshot RPC handler in Apache Kafka from 2.8.0 before 4.2.2, and from 4.3.0 before 4.3.2 on all platforms allows an authenticated attacker with CLUSTER_ACTION privilege to cause a denial of service (controller process termination) via a crafted FetchSnapshotRequest with an empty topics array or a topic with no partitions. Users are recommended to upgrade to version 4.2.2, 4.3.2, or 4.4.0, which fix this issue. Users on unsupported branches (4.1.x and earlier) should upgrade to 4.2.2 or later.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 19:04 UTC
CWE
  • CWE-480 - Use of incorrect operator
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1260 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache Kafka Affected: 2.8.0 , < 4.2.2 (semver)
Affected: 4.3.0 , < 4.3.2 (semver)
guessed Create a notification for this product.
Credits
Mike Read (GitHub: Michael-JRead) Kevin Wu <kwu@confluent.io>
Show details on NVD website
To clipboard 

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