CVE-2026-44160

Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd's in_http and in_forward plugins support gzip-compressed data but enforce limits only on compressed payloads through settings such as body_size_limit and chunk_size_limit, allowing crafted compressed payloads to decompress in memory to an excessive size and cause denial of service through memory exhaustion. This issue is fixed in version 1.19.3.

• CWE-409

• https://github.com/fluent/fluentd/commit/f5f2b7cddf8aab3932e6dec9fa367a5f3eb27e10Patch
• https://github.com/fluent/fluentd/pull/5393Issue Tracking, Patch
• https://github.com/fluent/fluentd/releases/tag/v1.19.3Product, Release Notes
• https://github.com/fluent/fluentd/security/advisories/GHSA-j9cw-hwqf-85w7Mitigation, Vendor Advisory

Published

Jul 8, 2026

Last Modified

Jul 13, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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