CVE-2026-49361

highCVSS 7.5covered by 1 sourcefirst seen 2026-06-01

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.

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Exploitation outlook

Low exploitation risk0.58% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 44% of all EPSS-scored CVEs.

Advisory coverage (1)

highGHSA-4c39-fwgj-4vq7: Apache Fluss: Unauthenticated remote attackers can exhaust JVM heap memory using crafted …ghsa · 2026-06-01

External references

NVD record for CVE-2026-49361

CVE.org record

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