CVE-2026-49361: CWE-770 Allocation of Resources Without Limits or Throttling in Apache Software Foundation Apache Fluss (incubating)
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.
AI Analysis
Technical Summary
The vulnerability in Apache Fluss (incubating) versions 0.8.0 and 0.9.0 arises from improper resource allocation controls in the Netty LengthFieldBasedFrameDecoder configuration, which uses Integer.MAX_VALUE as the maximum frame length. This lack of limits enables unauthenticated remote attackers to send crafted frames that exhaust JVM heap memory on critical server components, resulting in denial of service. The issue is fixed in version 0.9.1.
Potential Impact
Successful exploitation allows unauthenticated remote attackers to cause denial of service by exhausting JVM heap memory on TabletServer and CoordinatorServer components of Apache Fluss. This disrupts availability of the affected services. There is no indication of code execution or data breach from the provided information.
Mitigation Recommendations
Users should upgrade Apache Fluss to version 0.9.1, which fixes the vulnerability by properly limiting frame length. No other mitigation or temporary workaround is indicated. Patch status is not explicitly stated but upgrading to 0.9.1 is the recommended remediation.
CVE-2026-49361: CWE-770 Allocation of Resources Without Limits or Throttling in Apache Software Foundation Apache Fluss (incubating)
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.
CVSS v3.1
Score 7.5high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Apache Fluss (incubating) versions 0.8.0 and 0.9.0 arises from improper resource allocation controls in the Netty LengthFieldBasedFrameDecoder configuration, which uses Integer.MAX_VALUE as the maximum frame length. This lack of limits enables unauthenticated remote attackers to send crafted frames that exhaust JVM heap memory on critical server components, resulting in denial of service. The issue is fixed in version 0.9.1.
Potential Impact
Successful exploitation allows unauthenticated remote attackers to cause denial of service by exhausting JVM heap memory on TabletServer and CoordinatorServer components of Apache Fluss. This disrupts availability of the affected services. There is no indication of code execution or data breach from the provided information.
Mitigation Recommendations
Users should upgrade Apache Fluss to version 0.9.1, which fixes the vulnerability by properly limiting frame length. No other mitigation or temporary workaround is indicated. Patch status is not explicitly stated but upgrading to 0.9.1 is the recommended remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-29T15:44:37.184Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1d4e79e29bf47b50cd4b5f
Added to database: 6/1/2026, 9:18:49 AM
Last enriched: 6/1/2026, 9:34:34 AM
Last updated: 6/2/2026, 7:01:05 AM
Views: 14
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