CVE-2026-111074 In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component is vulnerable to a pre-authentication remote denial of service.
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-111074?
CVE-2026-111074 is a high-severity vulnerability in Eclipse OpenJ9, published on 21 Oct 2026.
Official description
In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component is vulnerable to a pre-authentication remote denial of service. When processing the initial 4-byte length field of an incoming TCP connection, an integer overflow in `MessageBuffer::computeRequiredCapacity()` causes the receiving compilation worker thread to enter an infinite loop consuming ~100% CPU. An unauthenticated remote attacker can exploit this by opening a small number of crafted TCP connections to exhaust the entire worker thread pool, silently halting compilation services for all connected client JVMs.
Which versions are affected by CVE-2026-111074?
How do I fix CVE-2026-111074?
No fix has been published for CVE-2026-111074 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111074 being exploited?
There is no known exploitation of CVE-2026-111074 in the wild and no public exploit code.
Sources
Also known as GHSA-rr74-gf97-xpw7.