CVE-2026-49361

Summary

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.

Affected Software

Weaknesses

• CWE-770: CWE-770 Allocation of Resources Without Limits or Throttling
• CWE-400: CWE-400 Uncontrolled Resource Consumption

ADP Enrichment

CVE Program Container

Additional References

• http://www.openwall.com/lists/oss-security/2026/05/30/5

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://lists.apache.org/thread/dccw6tj0njwtmvbftq13mw7fdhsok373

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