CVE-2026-110938: Input Validation Flaw

Description

In Eclipse OpenJ9 versions up to 0.63.0, the JITServer component is vulnerable to denial of service due to improper boundary checks during protocol message and reply handling. An unauthenticated remote attacker or malicious JITServer can transmit malformed network payloads that cause out-of-bounds heap reads, immediately crashing the JITServer daemon or client JVM process via a segmentation fault (SIGSEGV).

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EPSS — Exploit Prediction

0.0042

Probability of exploitation

0.35%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-125 Out-of-bounds Read

References

Other References

https://github.com/eclipse-openj9/openj9/pull/25011 https://gitlab.eclipse.org/security/cve-assignment/-/work_items/407 https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/943 https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/944 https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/946 https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/947

Frequently Asked Questions

What is CVE-2026-110938? +

In Eclipse OpenJ9 versions up to 0.63.0, the JITServer component is vulnerable to denial of service due to improper boundary checks during protocol message and reply handling. An unauthenticated remote attacker or malicious JITServer can transmit malformed network payloads that cause out-of-bounds heap reads, immediately crashing the JITServer daemon or client JVM process via a segmentation fault (SIGSEGV).

How do I check if I'm vulnerable to CVE-2026-110938? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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