CVE-2026-91403
Publication date 21 October 2026
Last updated 9 November 2026
Ubuntu priority
Description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u511, 8u511-perf, 11.0.33, 17.0.21, 21.0.13, 25.0.5, 27.0.1; Oracle GraalVM for JDK: 17.0.21 and 21.0.13; Oracle GraalVM Enterprise Edition: 21.3.20. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data as well as 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 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| openjdk-8 | 26.10 stonking |
Fixed in 8u512-b09~us1-0ubuntu1~26.10.1
|
| 26.04 LTS resolute |
Fixed in 8u512-b09~us1-0ubuntu1~26.04.1
|
|
| 24.04 LTS noble |
Fixed in 8u512-b09~us1-0ubuntu1~24.04.1
|
|
| 22.04 LTS jammy |
Fixed in 8u512-b09~us1-0ubuntu1~22.04.1
|
|
| 20.04 LTS focal |
Fixed in 8u512-b09~us1-0ubuntu1~20.04.1
|
|
| 18.04 LTS bionic |
Fixed in 8u512-b09~us1-0ubuntu1~18.04.1
|
|
| 16.04 LTS xenial |
Fixed in 8u512-b09~us1-0ubuntu1~16.04.1
|
|
| openjdk-9 | 26.10 stonking | Not in release |
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 16.04 LTS xenial | Ignored no longer supported by upstream | |
| openjdk-lts | 26.10 stonking |
Fixed in 11.0.33+9-1ubuntu1~26.10.1
|
| 26.04 LTS resolute |
Fixed in 11.0.33+9-1ubuntu1~26.04.1
|
|
| 24.04 LTS noble |
Fixed in 11.0.33+9-1ubuntu1~24.04.1
|
|
| 22.04 LTS jammy |
Fixed in 11.0.33+9-1ubuntu1~22.04.1
|
|
| 20.04 LTS focal |
Fixed in 11.0.33+9-1ubuntu1~20.04.1
|
|
| 18.04 LTS bionic |
Fixed in 11.0.33+9-1ubuntu1~18.04.1
|
|
| openjdk-13 | 26.10 stonking | Not in release |
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal | Ignored superseded by openjdk-17 | |
| openjdk-16 | 26.10 stonking | Not in release |
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal | Ignored superseded by openjdk-17 | |
| openjdk-17 | 26.10 stonking |
Not affected
|
| 26.04 LTS resolute |
Not affected
|
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| openjdk-17-crac | 26.10 stonking |
Not affected
|
| 26.04 LTS resolute |
Not affected
|
|
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| openjdk-18 | 26.10 stonking | Not in release |
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Ignored superseded by openjdk-19 | |
| openjdk-21 | 26.10 stonking |
Not affected
|
| 26.04 LTS resolute |
Not affected
|
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| openjdk-21-crac | 26.10 stonking |
Not affected
|
| 26.04 LTS resolute |
Not affected
|
|
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| openjdk-25 | 26.10 stonking |
Not affected
|
| 26.04 LTS resolute |
Not affected
|
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| openjdk-27 | 26.10 stonking |
Not affected
|
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release |
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mdeslaur
In Ubuntu, the OpenJDK packages use the system CA certificates, not the bundled ones. Unfortunately, because of LP: #2061817, the ca-certificates package doesn't correct update the java bundle correctly when updated. See the following blog post for instructions on how to manually update the java certificate store: https://ubuntu.com/blog/emudhra-ca-compromise-fixes-available
Severity score breakdown
CVSS version: CVSS v3.0
Base score
9.1 · Critical
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
Related Ubuntu Security Notices (USN)
- USN-9009-1
- OpenJDK 8 vulnerabilities
- 9 November 2026
- USN-9010-1
- OpenJDK 11 vulnerabilities
- 9 November 2026
- USN-9004-1
- OpenJDK 25 vulnerabilities
- 9 November 2026
- USN-9005-1
- OpenJDK 27 vulnerabilities
- 9 November 2026
- USN-9015-1
- OpenJDK 21 vulnerabilities
- 9 November 2026
- USN-9014-1
- OpenJDK 17 vulnerabilities
- 9 November 2026