CVE-2026-16440

A flaw was found in Eclipse OpenJ9. A remote attacker with low privileges could exploit this vulnerability by convincing a user to process a specially crafted .class file containing deeply nested annotations. This could lead to a segmentation fault, resulting in a Denial of Service (DoS) for the affected system.

This vulnerability is rated as Moderate impact because exploitation requires the JVM to process an untrusted compiled Java class file, resulting in an application crash and denial of service. Under typical deployment scenarios, Java environments execute trusted application binaries rather than parsing arbitrary external bytecode. Additionally, the flaw only impacts service availability via process termination, without compromising system confidentiality or data integrity.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.