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OpenAdvisories
High · 7.5 CVE-2026-91484 EUVD-2026-106729GHSA-gc2w-gh9m-xw58

Vulnerability in Oracle Java SE (component: Java plugin). Supported versions that are affected are Oracle Java SE: 8u503 and 8u503-perf. Di…

Published Oct 20, 2026 · Updated Oct 24, 2026 · Assigned by oracle

Description

Vulnerability in Oracle Java SE (component: Java plugin). Supported versions that are affected are Oracle Java SE: 8u503 and 8u503-perf. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Java SE executes to compromise Oracle Java SE. While the vulnerability is in Oracle Java SE, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Java SE accessible data as well as unauthorized access to critical data or complete access to all Oracle Java SE accessible data. Note: This vulnerability 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. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.1 Base Score 7.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N).

Affected products

VendorProductAffectedFixed
Oracle Oracle Java SE 8u503, 8u503-perf —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu 26.10 openjdk-8 +6 No fix yet —
Ubuntu 26.04 LTS openjdk-8 +6 No fix yet —
Ubuntu 24.04 LTS openjdk-8 +3 No fix yet —
Ubuntu 22.04 LTS openjdk-8 +5 No fix yet —
Ubuntu 20.04 LTS openjdk-13 +1 No fix yet —
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS openjdk-9 No fix yet —
Ubuntu Pro 24.04 LTS openjdk-lts No fix yet —
Ubuntu Pro 20.04 LTS openjdk-8 +3 No fix yet —
Ubuntu Pro 18.04 LTS openjdk-8 +2 No fix yet —
Ubuntu Pro 16.04 LTS openjdk-8 No fix yet —

Advisories 2

References