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VulnerabilityPublished Updated

CVE-2026-34268: Openjdk 8 · Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise

Affects openjdk-8Source GCVE Database

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Authoritative record:CVE-2026-34268· Low 2.9

Not known to be exploited · CVSS 2.9 Low · fixed in 8u492-ga~us2-0ubuntu1~16.04.1 : update openjdk-8 when convenient.

Data as of 9 Nov 2026, 23:33 UTC

CVSS 3.1 base score
2.9Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 8u492-ga~us2-0ubuntu1~16.04.1, 11.0.31+11-1ubuntu1~18.04.2, 17.0.19+10-1~18.04.2 +33
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Apr 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 9 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed 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-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-25-cracpkg:deb/ubuntu/openjdk-25-crac?arch=source&distro=stonkingOther threatsAffected
  • =25.0.2+10-0ubuntu1
  • =25.0.3+9-0ubuntu1
  • =25.0.4+7-0ubuntu1
Fixed in–
Ubuntu 26.10openjdk-8pkg:deb/ubuntu/openjdk-8?arch=source&distro=stonkingOther threatsAffected
  • 8u482-ga~us1-0ubuntu1 – 8u512-b09~us1-0ubuntu1~26.10.1
5 affected builds
Fixed in–
Ubuntu 26.04 LTSopenjdk-17pkg:deb/ubuntu/openjdk-17?arch=source&distro=resoluteOther threatsAffected
  • <17.0.19+10-1~26.04.2
Fixed in
  • 17.0.19+10-1~26.04.2
Ubuntu 26.04 LTSopenjdk-17-cracpkg:deb/ubuntu/openjdk-17-crac?arch=source&distro=resoluteOther threatsAffected
  • <17.0.19+10-0ubuntu1~26.04.1
Fixed in
  • 17.0.19+10-0ubuntu1~26.04.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Fixes for this vulnerability are available and should be applied. Affected users should upgrade to the fixed versions listed by the vendor. Refer to the official Ubuntu security notices (USN-8330-1, USN-8331-1, USN-8332-1, USN-8333-1, USN-8334-1, USN-8327-1, USN-8328-1, USN-8339-1, USN-8341-1) for patch details and installation instructions.

Description

A vulnerability exists in Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition affecting multiple versions including Java SE 8u481 and later versions up to certain fixed releases. The flaw allows an unauthenticated attacker with local logon access to the infrastructure running these products to gain unauthorized read access to some data. The vulnerability involves APIs in the security component and can be exploited via web services or sandboxed Java applications that run untrusted code. The CVSS 3.1 base score is 2.9, indicating a low severity confidentiality impact.

References

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