USN-9015-1: OpenJDK 21 vulnerabilities

It was discovered that the Security component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-83374)

It was discovered that the JSSE component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-83376)

It was discovered that the Compiler component of OpenJDK 21 did not correctly authorize users. An unauthenticated remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-83378)

It was discovered that the JAAS component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to read sensitive data. (CVE-2026-83380)

It was discovered that the Security component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-83381)

It was discovered that the JDBC component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to read sensitive data. (CVE-2026-83387)

It was discovered that the Networking component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to cause a denial of service or modify sensitive data. (CVE-2026-83395)

It was discovered that the JAXP component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-83400)

It was discovered that the JAXP component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to read sensitive data. (CVE-2026-87290)

It was discovered that the Networking component of OpenJDK 21 did not correctly authorize users. An unauthenticated remote attacker could possibly use this issue to read sensitive data. (CVE-2026-87291)

It was discovered that the Networking component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-87292)

It was discovered that the Security component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-87294)

It was discovered that the JAXP component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-87367)

It was discovered that the Networking component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-91332)

It was discovered that the Security component of OpenJDK 21 did not correctly authorize users. An unauthenticated remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-91333)

It was discovered that the ImageIO component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to read sensitive data. (CVE-2026-91334)

It was discovered that the AWT component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to read sensitive data. (CVE-2026-91335)

It was discovered that the JSSE component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-91373)

It was discovered that the Serviceability component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-91374)

It was discovered that the Libraries component of OpenJDK 21 did not correctly authenticate users. A local attacker could possibly use this issue to modify sensitive data. (CVE-2026-91375)

It was discovered that the JDK tools component of OpenJDK 21 did not correctly authenticate users. A local attacker could possibly use this issue to modify sensitive data. (CVE-2026-91379)

It was discovered that the Utility component of OpenJDK 21 did not correctly authorize users. A local attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-91380)

It was discovered that the Networking component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to read sensitive data. (CVE-2026-91394)

It was discovered that the Serviceability component of OpenJDK 21 did not correctly authorize users. A local attacker could possibly use this issue to cause a denial of service or modify sensitive data. (CVE-2026-91397)

It was discovered that the Networking component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-91398)

It was discovered that the Sound component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-91400)

It was discovered that the JSSE component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-91403)

It was discovered that the Libraries component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-91410)

It was discovered that the 2D component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to cause a denial of service or read or modify sensitive data. (CVE-2026-91415)

It was discovered that the ImageIO component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-91418)

It was discovered that the Networking component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-91451, CVE-2026-91452)

It was discovered that the Lightweight HTTP Server component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-91453)

It was discovered that the JSSE component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-91461)

It was discovered that the JGSS component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to modify sensitive data. (CVE-2026-91462)

It was discovered that the JGSS component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to read sensitive data. (CVE-2026-91463, CVE-2026-91464)

It was discovered that the Compiler component of OpenJDK 21 did not correctly authorize users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-91487)

It was discovered that the Libraries component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-101516)

It was discovered that the Security component of OpenJDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-114820)

In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.

Please see the following for more information: https://openjdk.org/groups/vulnerability/advisories/2026-10-20 https://openjdk.org/groups/vulnerability/advisories/2026-10-21 https://openjdk.org/groups/vulnerability/advisories/2026-10-24