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GHSA-4c39-fwgj-4vq7

Apache Fluss: Unauthenticated remote attackers can exhaust JVM heap memory using crafted frame headers via TabletServer/CoordinatorServer

Source: GitHub Advisory Database (reviewed) High CVE-2026-49361

Packages

EcosystemPackageAffectedFixed in
Maven org.apache.fluss:fluss-common >= 0.8.0-incubating-rc1, < 0.9.1-incubating 0.9.1-incubating

Details

As written in the advisory (Markdown source, shown as plain text).

Apache Fluss versions prior to 0.9.1 configure the Netty LengthFieldBasedFrameDecoder with Integer.MAX_VALUE as the maximum frame length, allowing unauthenticated remote attackers to exhaust JVM heap memory on TabletServer and CoordinatorServer by sending specially crafted frame headers, resulting in denial of service. This issue affects Apache Fluss (incubating): 0.8.0 and 0.9.0. Users are recommended to upgrade to version 0.9.1, which fixes the issue.

References

External links from the advisory. They lead to third-party sites.