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Message-ID: <6c7d16d1-26ed-85d7-1e5a-b01867bd596b@apache.org>
Date: Sat, 30 May 2026 15:19:31 +0000
From: Jark Wu <jark@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-49361: Apache Fluss Netty Frame Decoder Memory Exhaustion
Vulnerability
Severity: important
Affected versions:
- Apache Fluss (incubating) 0.8.0
- Apache Fluss (incubating) 0.9.0
Description:
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.
Credit:
Andrea Cosentino (reporter)
References:
https://fluss.apache.org
https://www.cve.org/CVERecord?id=CVE-2026-49361
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