CVE-2026-61308: Medium severity Oracle Java SE vulnerability
The java.net.HttpURLConnection class does not strip Proxy-Authorization headers for cross-host redirects.
Other sources
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).
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Affected Software
Event History
Frequently Asked Questions
Which deployments are most likely to be exposed?
Deployments that expose or use the affected Networking APIs through a web service are relevant, because attacker-controlled data can be supplied to those APIs over HTTP. The issue also applies to Java client deployments running sandboxed Java Web Start applications or sandboxed Java applets.
What does an attacker need to exploit this issue?
An unauthenticated attacker needs network access via HTTP and must be able to exploit the affected Networking component APIs, such as through a web service that passes supplied data to those APIs. Exploitation is rated difficult, but requires no privileges or user interaction.
What is the potential impact if exploitation succeeds?
A successful attack can provide unauthorized access to critical data or complete access to data accessible to the affected Java SE or GraalVM deployment. The scope may extend to additional products affected through the vulnerable deployment.
Which listed releases are affected?
Affected Oracle Java SE releases are 8u501, 11.0.32, 17.0.20, 21.0.12, 25.0.4, and 26.0.2. Affected Oracle GraalVM for JDK releases are 17.0.20 and 21.0.12, and the affected Oracle GraalVM Enterprise Edition release is 21.3.19.