ESB-2026.4091 — Vulnetix

ESB-2026.4091 PUBLISHED CVSS 7.5 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4091 OpenJDK 11.0.31 ELS Security Update for Windows Builds 23 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: OpenJDK 11.0.31 ELS Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2026-23865 CVE-2026-22016 CVE-2026-34282 CVE-2026-22021 CVE-2026-22013 CVE-2026-22018 CVE-2026-22007 CVE-2026-34268 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:9256 Comment: CVSS (Max): 7.5 CVE-2026-34282 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H EPSS (Max): 0.0% (12th) CVE-2026-34282 2026-04-22 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:9256 - Security Advisory Issued: 2026-04-22 Updated: 2026-04-22 Synopsis Openjdk 11.0.31 els security update for windows builds Type/Severity Security Advisory: Important Topic An update is now available for OpenJDK. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description The OpenJDK 11 packages provide the OpenJDK 11 Java Runtime Environment and the OpenJDK 11 Java Software Development Kit. This release of the Red Hat build of OpenJDK 11 (11.0.31) with Extended Lifecycle Support for Windows serves as a replacement for the Red Hat build of OpenJDK 11 (11.0.30) and includes security and bug fixes as well as enhancements. For further information, refer to the release notes linked to in the References section. Security Fix(es): o JDK: (CVE-2026-22007) o JDK: (CVE-2026-22016) o JDK: (CVE-2026-22013) o JDK: (CVE-2026-22018) o JDK: (CVE-2026-22021) o JDK: (CVE-2026-34268) o JDK: (CVE-2026-34282) o JDK: (CVE-2026-23865) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Affected Products o OpenJDK Java Extended Life Cycle Support 11 for RHEL 9 x86_64 o OpenJDK Java Extended Life Cycle Support 11 for RHEL 9 s390x o OpenJDK Java Extended Life Cycle Support 11 for RHEL 9 ppc64le o OpenJDK Java Extended Life Cycle Support 11 for RHEL 9 aarch64 o OpenJDK Java Extended Life Cycle Support 11 for RHEL 8 x86_64 o OpenJDK Java Extended Life Cycle Support 11 for RHEL 8 s390x o OpenJDK Java Extended Life Cycle Support 11 for RHEL 8 ppc64le o OpenJDK Java Extended Life Cycle Support 11 for RHEL 8 aarch64 o OpenJDK Java Extended Life Cycle Support 11 for RHEL 7 x86_64 o OpenJDK Java Extended Life Cycle Support 11 for RHEL 7 s390x Fixes (none) CVEs o CVE-2026-22007 o CVE-2026-22013 o CVE-2026-22016 o CVE-2026-22018 o CVE-2026-22021 o CVE-2026-23865 o CVE-2026-34268 o CVE-2026-34282 References o https://access.redhat.com/security/updates/classification/#important o https://docs.redhat.com/en/documentation/red_hat_build_of_openjdk/11/html/ release_notes_for_red_hat_build_of_openjdk_11.0.31/index - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================

Risk Scores

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
Red Hat	OpenJDK 11.0.31 ELS

Timeline

Apr 23, 2026 CVE Published
Apr 23, 2026 Distribution Patch

References

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