Information disclosure in Oracle Graalvm
CVE-2026-34268
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 8u481, 8u481-b50, 8u481-perf, 11.0.30, 17.0.18, 21.0.10, 25.0.2, 26; Oracle GraalVM for JDK: 17.0.18 and 21.0.10; Oracle GraalVM Enterprise Edition: 21.3.17. Difficult to exploit vulnerability allows unauthenticated attacker with logon to the infrastructure where Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition executes to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 2.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.001 (3.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
Affected products
- Oracle Graalvm — versions 21.3.17
- Oracle Graalvm For Jdk — versions 17.0.18, 21.0.10
- Oracle Jdk — versions 1.8.0, 11.0.30, 17.0.18
- Oracle Jre — versions 1.8.0, 11.0.30, 17.0.18
- Oracle Corporation Graalvm Enterprise Edition — versions 21.3.17
- Oracle Corporation Graalvm For Jdk — versions 17.0.18, 21.0.10
- Oracle Corporation Java Se — versions 8u481, 8u481-b50, 8u481-perf
Weakness classification (CWE)
References
- www.oracle.com/security-alerts/cpuapr2026.html (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-34268?
- CVE-2026-34268 is a low-severity vulnerability in Oracle Graalvm, classified under Information Disclosure. CVSS score: 2.9/10. Published 2026-04-21.
- How severe is CVE-2026-34268?
- Low severity. CVSS v3 base score is 2.9 out of 10.