CVE-2026-111073: Apache Kafka: PushTelemetry (KIP-714) metrics payloads are decompressed without a size limit, allowing a broker out-of-memo

CVE-2026-111073: Apache Kafka: PushTelemetry (KIP-714) metrics payloads are decompressed without a size limit, allowing a broker out-of-memory denial of service

Reported by oss-security

Summary by Cyber Security News28 Oct 2026, 18:31 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/q4/418

Posted by Manikumar on Oct 28 Severity: moderate Affected versions: - Apache Kafka 3.7.0 through 4.1.2 - Apache Kafka 4.2.0 through 4.2.1 - Apache Kafka 4.3.0 Description: The broker-side PushTelemetry API (KIP-714) validates only the compressed size of a client's metrics payload against telemetry.max.bytes (default 1 MB) before decompressing it. ClientTelemetryUtils.decompress() then decompresses the payload with no limit on the decompressed output size, growing 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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