# CVE-2026-6918: java: In Eclipse Open9J versions 0.21 to 0.58, a pre-authentication remote attacker can crash JITServer by sending a 32-byt...

CVE-2026-6918 is fixed in java on 1 platform by RHSA-2026:22328 (version 21-ibm-semeru-certified-jdk-1:21.0.11.0.10-2.el10_1), released April 30, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-6918
- Priority: High
- CVSS: 7.5 (important)
- EPSS: 0.0052
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 5, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | java RHEL 10 | 21-ibm-semeru-certified-jdk-1:21.0.11.0.10-2.el10_1 | [RHSA-2026:22328](https://patchblox.com/security/data/fix/linux/rhsa-2026-22328.md) | Apr 30, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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