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
Not known to be exploited · CVSS 7.0 High.
Data as of 31 Oct 2026, 08:20 UTC
- 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:LExploitation evidence
Disclosed: evidence found.
CVE published 15 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10openjdk-17pkg:deb/ubuntu/openjdk-17?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10openjdk-17-cracpkg:deb/ubuntu/openjdk-17-crac?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10openjdk-21pkg:deb/ubuntu/openjdk-21?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10openjdk-21-cracpkg:deb/ubuntu/openjdk-21-crac?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10openjdk-25pkg:deb/ubuntu/openjdk-25?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10openjdk-8pkg:deb/ubuntu/openjdk-8?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.