OpenJDK 8 flaws may let remote attackers read or change data
Ubuntu cites four CVEs in Security, JSSE, and JAAS; the notice cuts off before fixes.
52
CVE-2026-83380
Information disclosure in Oracle Java SE JAAS (unauthenticated network)
- CVSS 3.1
- 5.3 medium
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
An information-disclosure flaw in the JAAS component of Oracle Java SE, GraalVM for JDK, and GraalVM Enterprise Edition lets an unauthenticated remote attacker read a subset of accessible data. The attacker supplies data to JAAS APIs, for example through a web service, over multiple protocols, without user interaction. Sandboxed Java Web Start applications and applets that run untrusted code are also affected. Oracle lists specific builds as vulnerable and has not named fixed versions.
What to do: Apply Oracle's update for CVE-2026-83380.
| Product | Affected |
|---|---|
| Oracle Java SE | 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27 |
| Oracle GraalVM for JDK | 17.0.20.1, 21.0.12.1 |
| Oracle GraalVM Enterprise Edition | 21.3.19.1.1 |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JAAS). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. 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 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 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).
- Weakness
- CWE-200
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
In the news
3 storiesUbuntu fixes OpenJDK 17 flaws that can expose or alter data
Named issues include authentication and JSSE flaws plus a JAAS bug that could expose sensitive data.
48
OpenJDK 11 auth flaws may expose or alter data (USN-9010-1)
Ubuntu's notice says remote attackers could modify or read sensitive data via Security, JSSE, and JAAS issues.
38