CVE-2026-34268: Openjdk 8 · Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise
Affects openjdk-8Source GCVE Database
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
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 21 Apr 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 9 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
- ubuntu.com/security/notices/USN-8330-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8331-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8332-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8333-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8334-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8327-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8328-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8339-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8341-1 (opens in a new tab)
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10openjdk-17-cracpkg:deb/ubuntu/openjdk-17-crac?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-25-cracpkg:deb/ubuntu/openjdk-25-crac?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10openjdk-8pkg:deb/ubuntu/openjdk-8?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSopenjdk-17pkg:deb/ubuntu/openjdk-17?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSopenjdk-17-cracpkg:deb/ubuntu/openjdk-17-crac?arch=source&distro=resoluteOther 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
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
- ubuntu.com/security/CVE-2026-34268 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-34268 (opens in a new tab)
- openjdk.org/groups/vulnerability/advisories/2026-04-21 (opens in a new tab)
- ubuntu.com/security/notices/USN-8330-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8331-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8332-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8333-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8334-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8327-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8328-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8339-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8341-1 (opens in a new tab)