Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Fluentd | Fluentd | < 1.19.3 |
Related Weaknesses (CWE)
References
- https://github.com/fluent/fluentd/commit/f5f2b7cddf8aab3932e6dec9fa367a5f3eb27e1Patch
- https://github.com/fluent/fluentd/pull/5393Issue TrackingPatch
- https://github.com/fluent/fluentd/releases/tag/v1.19.3ProductRelease Notes
- https://github.com/fluent/fluentd/security/advisories/GHSA-j9cw-hwqf-85w7MitigationVendor Advisory
FAQ
What is CVE-2026-44160?
CVE-2026-44160 is a vulnerability with a CVSS score of 7.5 (HIGH). 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-compresse...
How severe is CVE-2026-44160?
CVE-2026-44160 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-44160?
Check the references section above for vendor advisories and patch information. Affected products include: Fluentd Fluentd.