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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/eclipse-openj9/openj9/pull/23793 Issue Tracking, Patch
- https://github.com/eclipse-openj9/openj9/security/advisories/GHSA-q393-vr4c-969r Exploit, Vendor Advisory
- https://github.com/eclipse-openj9/openj9/security/advisories/GHSA-q393-vr4c-969r Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.7 · eclipseNVD modified 2026-10-26 19:10
Affected (CPE criteria) 1
cpe:2.3:a:eclipse:openj9:*:*:*:*:*:*:*:*
References 7
- https://github.com/eclipse-openj9/openj9/pull/23793 Issue Tracking, Patch
- https://github.com/eclipse-openj9/openj9/security/advisories/GHSA-q393-vr4c-969r Exploit, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:22328
- https://access.redhat.com/security/cve/CVE-2026-6918
- https://bugzilla.redhat.com/show_bug.cgi?id=2466741
- https://github.com/eclipse-openj9/openj9/security/advisories/GHSA-q393-vr4c-969r Exploit, Vendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6918.json