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CVE-2026-83525

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

N/A
Published: October 28, 2026 at 04:37 PM UTC
Updated: October 29, 2026 at 03:04 PM UTC
1 product affected across 1 vendorKafka

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Patch
Source: cverecord
https://github.com/apache/kafka/pull/23185
Vendor Advisory
Source: cverecord
https://kafka.apache.org/cve-list
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/10/28/7

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-480

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