CVE-2026-83376: Infoleak

Published Oct 20, 2026
·
Updated

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: 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. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some 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 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).

Affected Software

55 affected componentsFixes available
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
debian/openjdk-17<17.0.21+9-1~deb12u1
17.0.21+9-1~deb12u1
debian/openjdk-21<21.0.13+9-1~deb13u2
21.0.13+9-1~deb13u2
debian/openjdk-21<21.0.13+9-1
21.0.13+9-1
debian/openjdk-25<25.0.5+8-1~deb13u1
25.0.5+8-1~deb13u1
debian/openjdk-25<25.0.5+8-1
25.0.5+8-1
debian/openjdk-27*
alpine/openjdk21<21.0.13.0.3_p1-r0
21.0.13.0.3_p1-r0
alpine/openjdk21<21.0.13.0.3_p1-r0
21.0.13.0.3_p1-r0
alpine/openjdk25<25.0.5.0.3_p1-r0
25.0.5.0.3_p1-r0
alpine/openjdk25<25.0.5.0.3_p1-r0
25.0.5.0.3_p1-r0
debian/openjdk-11
11.0.33+9-1
debian/openjdk-17<=17.0.19+10-1~deb12u2
17.0.21+9-1~deb12u117.0.21.0.3+1-1
debian/openjdk-21<=21.0.12.1+1-1~deb13u1
21.0.13+9-1~deb13u221.0.13.0.3+1-1
debian/openjdk-25<=25.0.3+9-2~deb13u1
25.0.5+8-1~deb13u125.0.5+8-125.0.5.0.3+1-1
debian/openjdk-27<=27~34ea-1
27.0.1.0.3+1-1
debian/openjdk-8
8u512-ga-1
ubuntu/openjdk-8<8u512-b09~us1-0ubuntu1~16.04.1
8u512-b09~us1-0ubuntu1~16.04.1
ubuntu/openjdk-9*
ubuntu/openjdk-lts<11.0.33+9-1ubuntu1~18.04.1
11.0.33+9-1ubuntu1~18.04.1
ubuntu/openjdk-17*
ubuntu/openjdk-8<8u512-b09~us1-0ubuntu1~18.04.1
8u512-b09~us1-0ubuntu1~18.04.1
ubuntu/openjdk-lts<11.0.33+9-1ubuntu1~20.04.1
11.0.33+9-1ubuntu1~20.04.1
ubuntu/openjdk-13*
ubuntu/openjdk-16*
ubuntu/openjdk-17*
ubuntu/openjdk-21*
ubuntu/openjdk-8<8u512-b09~us1-0ubuntu1~20.04.1
8u512-b09~us1-0ubuntu1~20.04.1
ubuntu/openjdk-17*
ubuntu/openjdk-21*
ubuntu/openjdk-25<25.0.5.0.3+1-1~22.04.1
25.0.5.0.3+1-1~22.04.1
ubuntu/openjdk-8<8u512-b09~us1-0ubuntu1~22.04.1
8u512-b09~us1-0ubuntu1~22.04.1
ubuntu/openjdk-lts<11.0.33+9-1ubuntu1~22.04.1
11.0.33+9-1ubuntu1~22.04.1
ubuntu/openjdk-17*
ubuntu/openjdk-21*
ubuntu/openjdk-25<25.0.5.0.3+1-1~24.04.1
25.0.5.0.3+1-1~24.04.1
ubuntu/openjdk-8<8u512-b09~us1-0ubuntu1~24.04.1
8u512-b09~us1-0ubuntu1~24.04.1
ubuntu/openjdk-lts<11.0.33+9-1ubuntu1~24.04.1
11.0.33+9-1ubuntu1~24.04.1
ubuntu/openjdk-17*
ubuntu/openjdk-17-crac*
ubuntu/openjdk-21*
ubuntu/openjdk-21-crac*
ubuntu/openjdk-25<25.0.5.0.3+1-1~26.10.1
25.0.5.0.3+1-1~26.10.1
ubuntu/openjdk-27<27.0.1.0.3+1-1~26.10.1
27.0.1.0.3+1-1~26.10.1
ubuntu/openjdk-8<8u512-b09~us1-0ubuntu1~26.10.1
8u512-b09~us1-0ubuntu1~26.10.1
ubuntu/openjdk-lts<11.0.33+9-1ubuntu1~26.10.1
11.0.33+9-1ubuntu1~26.10.1
ubuntu/openjdk-17*
ubuntu/openjdk-17-crac*
ubuntu/openjdk-21*
ubuntu/openjdk-21-crac*
ubuntu/openjdk-25<25.0.5.0.3+1-1~26.04.1
25.0.5.0.3+1-1~26.04.1
ubuntu/openjdk-8<8u512-b09~us1-0ubuntu1~26.04.1
8u512-b09~us1-0ubuntu1~26.04.1
ubuntu/openjdk-lts<11.0.33+9-1ubuntu1~26.04.1
11.0.33+9-1ubuntu1~26.04.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/openjdk-17 to a version that resolves this vulnerability.

    Fixed in 17.0.21+9-1~deb12u1
  2. Upgrade

    Upgrade debian/openjdk-21 to a version that resolves this vulnerability.

    Fixed in 21.0.13+9-1~deb13u2
  3. Upgrade

    Upgrade debian/openjdk-21 to a version that resolves this vulnerability.

    Fixed in 21.0.13+9-1
  4. Upgrade

    Upgrade debian/openjdk-25 to a version that resolves this vulnerability.

    Fixed in 25.0.5+8-1~deb13u1
  5. Upgrade

    Upgrade debian/openjdk-25 to a version that resolves this vulnerability.

    Fixed in 25.0.5+8-1
  6. Upgrade

    Upgrade alpine/openjdk21 to a version that resolves this vulnerability.

    Fixed in 21.0.13.0.3_p1-r0
  7. Upgrade

    Upgrade alpine/openjdk25 to a version that resolves this vulnerability.

    Fixed in 25.0.5.0.3_p1-r0
  8. Upgrade

    Upgrade debian/openjdk-11 to a version that resolves this vulnerability.

    Fixed in 11.0.33+9-1
  9. Upgrade

    Upgrade debian/openjdk-17 to a version that resolves this vulnerability.

    Fixed in 17.0.21+9-1~deb12u1Fixed in 17.0.21.0.3+1-1
  10. Upgrade

    Upgrade debian/openjdk-21 to a version that resolves this vulnerability.

    Fixed in 21.0.13+9-1~deb13u2Fixed in 21.0.13.0.3+1-1
  11. Upgrade

    Upgrade debian/openjdk-25 to a version that resolves this vulnerability.

    Fixed in 25.0.5+8-1~deb13u1Fixed in 25.0.5+8-1Fixed in 25.0.5.0.3+1-1
  12. Upgrade

    Upgrade debian/openjdk-27 to a version that resolves this vulnerability.

    Fixed in 27.0.1.0.3+1-1
  13. Upgrade

    Upgrade debian/openjdk-8 to a version that resolves this vulnerability.

    Fixed in 8u512-ga-1
  14. Upgrade

    Upgrade ubuntu/openjdk-8 to a version that resolves this vulnerability.

    Fixed in 8u512-b09~us1-0ubuntu1~16.04.1
  15. Upgrade

    Upgrade ubuntu/openjdk-lts to a version that resolves this vulnerability.

    Fixed in 11.0.33+9-1ubuntu1~18.04.1
  16. Upgrade

    Upgrade ubuntu/openjdk-8 to a version that resolves this vulnerability.

    Fixed in 8u512-b09~us1-0ubuntu1~18.04.1
  17. Upgrade

    Upgrade ubuntu/openjdk-lts to a version that resolves this vulnerability.

    Fixed in 11.0.33+9-1ubuntu1~20.04.1
  18. Upgrade

    Upgrade ubuntu/openjdk-8 to a version that resolves this vulnerability.

    Fixed in 8u512-b09~us1-0ubuntu1~20.04.1
  19. Upgrade

    Upgrade ubuntu/openjdk-25 to a version that resolves this vulnerability.

    Fixed in 25.0.5.0.3+1-1~22.04.1
  20. Upgrade

    Upgrade ubuntu/openjdk-8 to a version that resolves this vulnerability.

    Fixed in 8u512-b09~us1-0ubuntu1~22.04.1
  21. Upgrade

    Upgrade ubuntu/openjdk-lts to a version that resolves this vulnerability.

    Fixed in 11.0.33+9-1ubuntu1~22.04.1
  22. Upgrade

    Upgrade ubuntu/openjdk-25 to a version that resolves this vulnerability.

    Fixed in 25.0.5.0.3+1-1~24.04.1
  23. Upgrade

    Upgrade ubuntu/openjdk-8 to a version that resolves this vulnerability.

    Fixed in 8u512-b09~us1-0ubuntu1~24.04.1
  24. Upgrade

    Upgrade ubuntu/openjdk-lts to a version that resolves this vulnerability.

    Fixed in 11.0.33+9-1ubuntu1~24.04.1
  25. Upgrade

    Upgrade ubuntu/openjdk-25 to a version that resolves this vulnerability.

    Fixed in 25.0.5.0.3+1-1~26.10.1
  26. Upgrade

    Upgrade ubuntu/openjdk-27 to a version that resolves this vulnerability.

    Fixed in 27.0.1.0.3+1-1~26.10.1
  27. Upgrade

    Upgrade ubuntu/openjdk-8 to a version that resolves this vulnerability.

    Fixed in 8u512-b09~us1-0ubuntu1~26.10.1
  28. Upgrade

    Upgrade ubuntu/openjdk-lts to a version that resolves this vulnerability.

    Fixed in 11.0.33+9-1ubuntu1~26.10.1
  29. Upgrade

    Upgrade ubuntu/openjdk-25 to a version that resolves this vulnerability.

    Fixed in 25.0.5.0.3+1-1~26.04.1
  30. Upgrade

    Upgrade ubuntu/openjdk-8 to a version that resolves this vulnerability.

    Fixed in 8u512-b09~us1-0ubuntu1~26.04.1
  31. Upgrade

    Upgrade ubuntu/openjdk-lts to a version that resolves this vulnerability.

    Fixed in 11.0.33+9-1ubuntu1~26.04.1

Event History

Oct 20, 2026
CVE Published
via MITRE·09:23 PM
Data Sourced
via MITRE·09:23 PM
DescriptionSeverity
Data Sourced
via OSV·10:19 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·10:19 PM
DescriptionSeverityWeakness
Oct 21, 2026
Data Sourced
via Red Hat·12:06 AM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which deployments are most exposed to this issue?

Network-accessible applications that process attacker-controlled data through JSSE APIs over TLS may be exposed, including web services that pass supplied data to those APIs. Java client deployments running sandboxed Java Web Start applications or sandboxed applets that load untrusted internet code and rely on the Java sandbox are also affected.

2

What does an attacker need to exploit it?

The attacker does not need authentication or user interaction, but needs network access via TLS. Oracle characterizes exploitation as difficult and notes that exploitation can occur through use of APIs in the affected JSSE component.

3

What is the potential impact of a successful attack?

A successful attack can allow unauthorized update, insertion, or deletion of some accessible data in the affected Java SE or GraalVM products. The stated CVSS impact is limited to integrity; no confidentiality or availability impact is listed.

4

Which versions are identified as affected?

Affected Oracle Java SE versions are 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, and 27. Affected Oracle GraalVM for JDK versions are 17.0.20.1 and 21.0.12.1, and the affected Oracle GraalVM Enterprise Edition version is 21.3.19.1.1.

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