CVE-2026-87291
Publication date 20 October 2026
Last updated 9 November 2026
Ubuntu priority
Description
Vulnerability in Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 21.0.12.1, 25.0.4.1 and 27. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| openjdk-8 | 26.10 stonking |
Needs evaluation
|
| 26.04 LTS resolute |
Needs evaluation
|
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 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 |
Needs evaluation
|
| 26.04 LTS resolute |
Needs evaluation
|
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 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| 20.04 LTS focal | Ignored superseded by openjdk-17 | |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| 20.04 LTS focal | Ignored superseded by openjdk-17 | |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 |
Needs evaluation
|
| 26.04 LTS resolute |
Needs evaluation
|
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| openjdk-17-crac | 26.10 stonking |
Needs evaluation
|
| 26.04 LTS resolute |
Needs evaluation
|
|
| 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 |
Fixed in 21.0.13.0.3+1-1~26.10.1
|
| 26.04 LTS resolute |
Fixed in 21.0.13.0.3+1-1~26.04.1
|
|
| 24.04 LTS noble |
Fixed in 21.0.13.0.3+1-1~24.04.1
|
|
| 22.04 LTS jammy |
Fixed in 21.0.13.0.3+1-1~22.04.1
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| openjdk-21-crac | 26.10 stonking |
Needs evaluation
|
| 26.04 LTS resolute |
Needs evaluation
|
|
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| openjdk-25 | 26.10 stonking |
Fixed in 25.0.5.0.3+1-1~26.10.1
|
| 26.04 LTS resolute |
Fixed in 25.0.5.0.3+1-1~26.04.1
|
|
| 24.04 LTS noble |
Fixed in 25.0.5.0.3+1-1~24.04.1
|
|
| 22.04 LTS jammy |
Fixed in 25.0.5.0.3+1-1~22.04.1
|
|
| openjdk-27 | 26.10 stonking |
Fixed in 27.0.1.0.3+1-1~26.10.1
|
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release |
Severity score breakdown
CVSS version: CVSS v3.0
Base score
5.3 · Medium
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
Related Ubuntu Security Notices (USN)
- 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