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VulnerabilityPublished Updated

CVE-2026-83368: Openjdk 8 · Vulnerability in the Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition, Oracle GraalVM product of Oracle Java SE (component: Compiler)

Affects openjdk-8Source GCVE Database

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Authoritative record:CVE-2026-83368· High 7.0

Not known to be exploited · CVSS 7.0 High.

Data as of 31 Oct 2026, 08:20 UTC

CVSS 3.1 base score
7.0High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10openjdk-17pkg:deb/ubuntu/openjdk-17?arch=source&distro=stonkingOther threatsAffected
  • 17.0.18+8-1 – 17.0.21~6ea-1
6 affected builds
Fixed in–
Ubuntu 26.10openjdk-17-cracpkg:deb/ubuntu/openjdk-17-crac?arch=source&distro=stonkingOther threatsAffected
  • =17.0.18+8-0ubuntu1
  • =17.0.19+10-0ubuntu1
  • =17.0.20+8-0ubuntu1
Fixed in–
Ubuntu 26.10openjdk-21pkg:deb/ubuntu/openjdk-21?arch=source&distro=stonkingOther threatsAffected
  • 21.0.11+10-1 – 21.0.12~5ea-1
5 affected builds
Fixed in–
Ubuntu 26.10openjdk-21-cracpkg:deb/ubuntu/openjdk-21-crac?arch=source&distro=stonkingOther threatsAffected
  • =21.0.10+7-0ubuntu1
  • =21.0.11+10-0ubuntu1
  • =21.0.12+8-0ubuntu1
Fixed in–
Ubuntu 26.10openjdk-25pkg:deb/ubuntu/openjdk-25?arch=source&distro=stonkingOther threatsAffected
  • 25.0.3+9-2 – 25.0.4~4ea-1
5 affected builds
Fixed in–
Ubuntu 26.10openjdk-8pkg:deb/ubuntu/openjdk-8?arch=source&distro=stonkingOther threatsAffected
  • 8u482-ga~us1-0ubuntu1 – 8u504-ga-1ubuntu1
4 affected builds
Fixed in–

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AI-suggested

Oracle has released security patches for this vulnerability in the September 2026 Critical Security Patch Update. It is strongly recommended that users apply these patches promptly to mitigate the risk. No vendor advisory indicates that no action is required or that the issue is already mitigated without patching. Therefore, applying the official patches is the primary mitigation.

Description

CVE-2026-83368 is a vulnerability in the Oracle GraalVM Compiler component affecting multiple Oracle GraalVM products including Oracle GraalVM for JDK 17, JDK 21, and Oracle GraalVM Enterprise Edition. The vulnerability allows a remote unauthenticated attacker with network access via HTTP to potentially gain unauthorized access to critical data, perform unauthorized data modifications, and cause partial denial of service. The CVSS 3.1 base score is 7.0, indicating a medium severity level. Oracle has released security patches addressing this vulnerability as part of their September 2026 Critical Security Patch Update.

References

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