CVE-2026-61308 Information disclosure in Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition
An unauthenticated attacker can exploit a networking flaw in Oracle Java SE to gain unauthorized access to critical data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-61308?
CVE-2026-61308 is a medium-severity vulnerability in Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u501, 11.0.32, 17.0.20, 21.0.12, 25.0.4, 26.0.2; Oracle GraalVM for JDK: 17.0.20 and 21.0.12; Oracle GraalVM Enterprise Edition: 21.3.19. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. While the vulnerability is in Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all 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 6.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N).
Weakness: CWE-284
Which versions are affected by CVE-2026-61308?
3 open source packages ship an affected version, including java, java-min and jre.
| Package | Affected | Fixed in |
|---|---|---|
java Bitnami | All versions | 1.8.0, 8.0.503, 11.0.32-1, 17.0.20-1, 21.0.12-1, 25.0.4-1, 26.0.2-1 |
java-min Bitnami | All versions | 1.8.0, 8.0.503, 11.0.32-1, 17.0.20-1, 21.0.12-1, 25.0.4-1, 26.0.2-1 |
jre Bitnami | All versions | 1.8.0, 8.0.503, 11.0.32-1, 17.0.20-1, 21.0.12-1, 25.0.4-1, 26.0.2-1 |
How do I fix CVE-2026-61308?
Upgrade java to a fixed version for your release line: 1.8.0, 8.0.503, 11.0.32-1 or 17.0.20-1.
Is CVE-2026-61308 being exploited?
There is no known exploitation of CVE-2026-61308 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-61308, BIT-java-2026-61308, BIT-java-min-2026-61308, BIT-jre-2026-61308, DEBIAN-CVE-2026-61308, GHSA-wvj6-93q8-xhcm and 29 more.