Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Fluss | >= 0.8.0, < 0.9.1 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/dccw6tj0njwtmvbftq13mw7fdhsok373Mailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/05/30/5Mailing ListThird Party Advisory
FAQ
What is CVE-2026-49361?
CVE-2026-49361 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2026-49361?
CVE-2026-49361 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-49361?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Fluss.