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Eclipse OpenJ9

DEVOPS
Velocity5.0

High performance Java virtual machine optimized for cloud and small footprint

www.eclipse.org/openj9 ↗

OpenJ9 follows its 0.63 CVE release with a notes-less 0.63.0.1 respin.

jvmjavajitserversecurityopenjdk-updates
◆Current state
Eclipse OpenJ9, IBM's alternative JVM, released 0.63.0 on October 28 with several CVE fixes and JITServer hardening against oversized and malformed messages. A 0.63.0.1 point tag followed on November 3 with only repository hashes. Earlier 2026 releases added JDK 26 support, moved the build fully to CMake, and patched CVEs in most cycles.
◆Where it's heading
OpenJ9 tracks the OpenJDK quarterly update train, with security fixes in most releases and JITServer getting the most attention. A quick point release after 0.63.0 usually means a fix for a regression or a missed JDK update, but the tag doesn't say which.
◆Prediction
The next regular release should land with the January OpenJDK updates; what prompted 0.63.0.1 is unclear from the entries.

◆Recent moves

  1. 6d ago

    OpenJ9 0.63.0.1 point release, no notes published

    A 0.63.0.1 point tag six days after 0.63.0, published with only OpenJ9 and OMR hashes. Likely a respin fix; nothing user-visible is documented.

    View source ↗
  2. 12d ago

    Eclipse OpenJ9 v0.63.0

    OpenJ9 0.63.0 resolves several CVEs, with JITServer hardened against oversized and malformed messages. Maintenance plus security for a JVM used in container deployments.

    View source ↗
  3. 2mo ago

    openj9-0.62.0 — release tagged (notes pending)

    v0.62.0 tagged with only repo SHAs published — full release notes are not yet available. No content to evaluate.

    View source ↗
  4. 2mo ago

    openj9-0.61.0 — release tagged (notes pending)

    v0.61.0 tagged with only repo SHAs — same as v0.62.0, full release notes not yet published.

    View source ↗
  5. 3mo ago

    Eclipse OpenJ9 v0.60.0

    Three security CVEs patched in one release — the most in a single OpenJ9 release recently. JDK support extended to 26.0.2. JFR gains NetworkUtilization event support, thread exclusion/inclusion, and improved JFR v2 testing. VectorAPI expansion gets UseDef-based optimization.

    View source ↗
  6. 6mo ago

    Eclipse OpenJ9 v0.59.0

    Security fix for CVE-2026-6918 alongside JFR carrier thread processing fix and switch to OpenSSL 3.5.6. Improved default jcmd heap dump to use compact format, and reduced default park() sleep time for better virtual thread throughput.

    View source ↗