CVE-2026-49361CWE-400CWE-770

Apache Fluss Netty Frame Decoder Memory Exhaustion Vulnerability

High · published June 1, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
59.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00898 · 59.2th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-06-01T07:57Z
EPSS history
Timeline
  • 01 JUN 07:57Z
    Apache Fluss Netty Frame Decoder Memory Exhaustion Vulnerability
    cvelistv5