CVE-2026-49361
HIGHApache Fluss Netty Frame Decoder Memory Exhaustion Vulnerability
Title source: cnaDescription
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 (2)
Core 2
Core References
Vendor Advisory vendor-advisory
https://lists.apache.org/thread/dccw6tj0njwtmvbftq13mw7fdhsok373
Scores
CVSS v3
7.5
EPSS
0.0101
EPSS Percentile
58.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-400
CWE-770
Status
published
Products (3)
apache/fluss
0.8.0 - 0.9.1
Apache Software Foundation/Apache Fluss (incubating)
0.8.0
Apache Software Foundation/Apache Fluss (incubating)
0.9.0
Published
Jun 01, 2026
Tracked Since
Jun 01, 2026