Bug 2466741 (CVE-2026-6918)

Summary: CVE-2026-6918 Eclipse Open9J: Denial of Service in JITServer via crafted TCP message
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Eclipse Open9J and JITServer. A remote attacker, without needing to authenticate, can send a specially crafted 32-byte TCP message to JITServer. This action can cause JITServer to crash, leading to a Denial of Service (DoS) for affected systems.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-05-05 13:01:54 UTC
In Eclipse Open9J versions 0.21 to 0.58, a pre-authentication remote attacker can crash JITServer by sending a 32-byte crafted TCP message.

Comment 2 errata-xmlrpc 2026-06-01 17:49:53 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support
  Red Hat Enterprise Linux 10
  Red Hat Enterprise Linux 10.2 Extended Update Support

Via RHSA-2026:22328 https://access.redhat.com/errata/RHSA-2026:22328