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Advisory record · GHSA-4c39-fwgj-4vq7

Apache Fluss: Unauthenticated remote attackers can exhaust JVM heap memory using crafted frame headers via TabletServer/CoordinatorServer

CVSS 7.5 HighEPSS 0.0083 · 57th percentile

Published by the GitHub Advisory Database at 1 Jun 2026, 09:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.fluss:fluss-commonMaven>=0.8.0-incubating-rc1, <0.9.1-incubating0.9.1-incubating
Identifiers
GHSA-4c39-fwgj-4vq7 · CVE-2026-49361
Weakness (CWE)
CWE-400 · CWE-770
Tags
Published
1 Jun 2026
Updated
8 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache Fluss (fluss-common) versions from 0.8.0-incubating-rc1 up to, but not including, 0.9.1-incubating are affected. An unauthenticated remote attacker who can reach the TabletServer or CoordinatorServer can send crafted frame headers that exhaust JVM heap memory, causing a denial of service. Upgrade to 0.9.1-incubating, which fixes the issue.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0083, the 57th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:19 UTC First seen by agentprime
  2. 31 Oct 2026, 14:19 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.