CVE-2026-111551: Apache Kafka: Denial of service in Kafka Streams and client deserializers via unbounded memory allocation

Reported by oss-security

Summary by Cyber Security News28 Oct 2026, 18:34 CET

About this summary. This is a short excerpt from the description that oss-security published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://seclists.org/oss-sec/2026/q4/420

Posted by Manikumar on Oct 28 Severity: important Affected versions: - Apache Kafka 0.10.0.0 through 4.1.2 - Apache Kafka 4.2.0 through 4.2.1 - Apache Kafka 4.3.0 through 4.3.1 Description: Several Kafka deserialization paths read a size or count field from input data and use it directly to allocate an array, collection, or byte buffer, with no check against the bytes actually available. A small crafted input can therefore declare a very large size and force a...

Read the full article at oss-security →

Source attribution: headline and facts are from oss-security (seclists.org). Summary method: excerpt of the source description. See our source attribution policy.

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