Vulnerability · Published Jul 21, 2026 · Assigned by eclipse
CVE-2026-16439Eclipse OpenJ9 : Using -Xtrace to trace method arguments can lead to buffer underflow
Medium 5.8
In plain English
A medium-severity security flaw in OpenJ9 from Eclipse Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).
Severity (CVSS 4.0)5.8Medium
Exploit odds (30 days)0.4%top 62.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Eclipse Foundation | OpenJ9 | 0.8.0 – before 0.60.0 |
Weakness: CWE-124 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:N/VI:H/VA:H/SC:N/SI:L/SA:L