Skip to content
OpenAdvisories
Low · 3.7 CVE-2026-91409 EUVD-2026-106661GHSA-5r5x-j567-5823

Vulnerability in Oracle Java SE (component: Networking). The supported version that is affected is Oracle Java SE: 27. Difficult to exploit…

Published Oct 20, 2026 · Updated Oct 23, 2026 · Assigned by oracle

Description

Vulnerability in Oracle Java SE (component: Networking). The supported version that is affected is Oracle Java SE: 27. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also 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. CVSS 3.1 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

Affected products

VendorProductAffectedFixed
Oracle Oracle Java SE 27 —

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
Debian 14 openjdk-27 No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 openjdk-27 No fix yet —

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 java-1.8.0-amazon-corretto +2 1:1.8.0_512.b08-1.amzn2023 ALAS2023-2026-3315
Amazon Linux 2023 java-11-amazon-corretto +5 1:11.0.33.0.9-1.amzn2023 ALAS2023-2026-3317
Amazon Linux 2023 java-17-amazon-corretto +5 1:17.0.21.0.10-1.amzn2023.1 ALAS2023-2026-3318
Amazon Linux 2023 java-21-amazon-corretto +5 1:21.0.13.0.10-1.amzn2023.1 ALAS2023-2026-3319
Amazon Linux 2023 java-25-amazon-corretto +5 1:25.0.5.0.9-1.amzn2023.1 ALAS2023-2026-3320
Amazon Linux 2023 java-27-amazon-corretto +5 1:27.0.1.0.10-1.amzn2023.1 ALAS2023-2026-3316
Amazon Linux 2 java-11-amazon-corretto +3 1:11.0.33.0.9-1.amzn2 ALAS2-2026-4039
Amazon Linux 2 java-17-amazon-corretto +5 1:17.0.21.0.10-1.amzn2.1 ALAS2-2026-4040

Advisories 10

References