CVE-2026-83525

UNKNOWN 0.0

Apache Kafka: Incorrect boolean operator in FetchSnapshot RPC handler allows authenticated network clients to crash the KRaft controller via a malformed request.

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-480
Vendor	apache software foundation
Product	apache kafka
Published	Oct 28, 2026
Last Updated	Oct 28, 2026

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Affected Versions

Apache Software Foundation / Apache Kafka

2.8.0 < 4.2.2 4.3.0 < 4.3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/apache/kafka/pull/23185 kafka.apache.org: https://kafka.apache.org/cve-list openwall.com: http://www.openwall.com/lists/oss-security/2026/10/28/7

Credits

🔍 Mike Read (GitHub: Michael-JRead) Kevin Wu <[email protected]>