Vulnerability record · CVE-2026-49361 · published 1 June 2026

CVE-2026-49361: Apache fluss uncontrolled resource consumption vulnerability

Apache · Fluss

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.

7.5 CVSS 3.1 High EPSS 0.90% · top 42.0% CWE-400 · Uncontrolled resource consumptionCWE-770 · Allocation without limits

7.5CVSS 3.1 base score

0.90%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

2References

22 Jul 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Fluss Apache

References

Link	Tags
https://lists.apache.org/thread/dccw6tj0njwtmvbftq13mw7fdhsok373	Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/30/5	Mailing ListThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-49361), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.