usn-8002-1
Vulnerability from osv_ubuntu
Published
2026-02-02 23:31
Modified
2026-06-30 15:54
Summary
openjdk-21 vulnerabilities
Details

It was discovered that the RMI component of OpenJDK 21 would establish RMI TCP endpoint connections to a remote host without setting an endpoint identification algorithm. An unauthenticated remote attacker could possibly use this issue to steal sensitive information. (CVE-2026-21925)

Mingijung discovered that the AWT and JavaFX componenets of OpenJDK 21 could run programs if Desktop.browse() was supplied a filename as a URI. An unauthenticated remote attacker could possibly use this issue to execute arbitrary code. (CVE-2026-21932)

Zhihui Chen discovered that the Networking component of OpenJDK 21 was suceptible to a CRLF injection vulnerability via the HttpServer class. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. (CVE-2026-21933)

Ireneusz Pastusiak discovered that the Security component of OpenJDK 21 failed to verify provided URIs point to a legitimate source when AIA is enabled. An unauthenticated remote attacker could possibly use this issue to redirect users to malicious hosts. (CVE-2026-21945)

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/2026-01-20

References
To clipboard 

{
  "affected": [
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      "database_specific": {
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              "severity": [
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                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
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            },
            {
              "id": "CVE-2026-21932",
              "severity": [
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                  "type": "CVSS_V3"
                },
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
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                  "type": "Ubuntu"
                }
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            },
            {
              "id": "CVE-2026-21933",
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                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-21945",
              "severity": [
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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        }
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                  "type": "CVSS_V3"
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                  "type": "CVSS_V3"
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                },
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            },
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              "id": "CVE-2026-21933",
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                },
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                }
              ]
            },
            {
              "id": "CVE-2026-21945",
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                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
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            "binary_name": "openjdk-21-demo",
            "binary_version": "21.0.10+7-1~22.04"
          },
          {
            "binary_name": "openjdk-21-jdk",
            "binary_version": "21.0.10+7-1~22.04"
          },
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      },
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        "name": "openjdk-21",
        "purl": "pkg:deb/ubuntu/openjdk-21@21.0.10+7-1~22.04?arch=source\u0026distro=jammy"
      },
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                  "type": "CVSS_V3"
                },
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                }
              ]
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              "id": "CVE-2026-21932",
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                },
                {
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                },
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                  "type": "Ubuntu"
                }
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              "id": "CVE-2026-21933",
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                  "type": "CVSS_V3"
                },
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                }
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            {
              "id": "CVE-2026-21945",
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                  "type": "CVSS_V3"
                },
                {
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                },
                {
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                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openjdk-21-demo",
            "binary_version": "21.0.10+7-1~24.04"
          },
          {
            "binary_name": "openjdk-21-jdk",
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          },
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          }
        ]
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        }
      ],
      "versions": [
        "21+35-1",
        "21.0.1+12-2",
        "21.0.1+12-3",
        "21.0.2+13-1",
        "21.0.2+13-2",
        "21.0.3~7ea-1",
        "21.0.3~7ea-1build1",
        "21.0.3~7ea-1build2",
        "21.0.3+9-1",
        "21.0.3+9-1ubuntu1",
        "21.0.4+7-1ubuntu2~24.04",
        "21.0.5+11-1ubuntu1~24.04",
        "21.0.6+7-1~24.04.1",
        "21.0.7+6~us1-0ubuntu1~24.04",
        "21.0.8+9~us1-0ubuntu1~24.04.1",
        "21.0.9+10-1~24.04"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-21925",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-21932",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-21933",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-21945",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openjdk-21-demo",
            "binary_version": "21.0.10+7-1~25.10"
          },
          {
            "binary_name": "openjdk-21-jdk",
            "binary_version": "21.0.10+7-1~25.10"
          },
          {
            "binary_name": "openjdk-21-jdk-headless",
            "binary_version": "21.0.10+7-1~25.10"
          },
          {
            "binary_name": "openjdk-21-jre",
            "binary_version": "21.0.10+7-1~25.10"
          },
          {
            "binary_name": "openjdk-21-jre-headless",
            "binary_version": "21.0.10+7-1~25.10"
          },
          {
            "binary_name": "openjdk-21-jre-zero",
            "binary_version": "21.0.10+7-1~25.10"
          },
          {
            "binary_name": "openjdk-21-source",
            "binary_version": "21.0.10+7-1~25.10"
          },
          {
            "binary_name": "openjdk-21-testsupport",
            "binary_version": "21.0.10+7-1~25.10"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "openjdk-21",
        "purl": "pkg:deb/ubuntu/openjdk-21@21.0.10+7-1~25.10?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "21.0.10+7-1~25.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "21.0.7~8ea-1",
        "21.0.7+6-1",
        "21.0.8~5ea-1",
        "21.0.8+9~us1-0ubuntu1",
        "21.0.8+9-1",
        "21.0.9~5ea-1",
        "21.0.9~8ea-1",
        "21.0.9+10-1~25.10"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the RMI component of OpenJDK 21 would establish\nRMI TCP endpoint connections to a remote host without setting an\nendpoint identification algorithm. An unauthenticated remote attacker\ncould possibly use this issue to steal sensitive information.\n(CVE-2026-21925)\n\nMingijung discovered that the AWT and JavaFX componenets of OpenJDK 21\ncould run programs if Desktop.browse() was supplied a filename as a\nURI. An unauthenticated remote attacker could possibly use this issue\nto execute arbitrary code. (CVE-2026-21932)\n\nZhihui Chen discovered that the Networking component of OpenJDK 21\nwas suceptible to a CRLF injection vulnerability via the HttpServer\nclass. An unauthenticated remote attacker could possibly use this\nissue to modify files or leak sensitive information. (CVE-2026-21933)\n\nIreneusz Pastusiak discovered that the Security component of OpenJDK 21\nfailed to verify provided URIs point to a legitimate source when\nAIA is enabled. An unauthenticated remote attacker could possibly\nuse this issue to redirect users to malicious hosts.\n(CVE-2026-21945)\n\nIn addition to security fixes, the updated packages contain bug fixes,\nnew features, and possibly incompatible changes.\n\nPlease see the following for more information:\nhttps://openjdk.org/groups/vulnerability/advisories/2026-01-20",
  "id": "USN-8002-1",
  "modified": "2026-06-30T15:54:46Z",
  "published": "2026-02-02T23:31:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8002-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-21925"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-21932"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-21933"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-21945"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "openjdk-21 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-21925",
    "UBUNTU-CVE-2026-21932",
    "UBUNTU-CVE-2026-21933",
    "UBUNTU-CVE-2026-21945"
  ]
}



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