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      "cve": "CVE-2026-4282",
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          "text": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation.",
          "title": "Vulnerability description"
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          "text": "keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw",
          "title": "Vulnerability summary"
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          "category": "other",
          "text": "This is an IMPORTANT vulnerability in Keycloak. An unauthenticated attacker can exploit a lack of type and namespace isolation in Keycloak's SingleUseObjectProvider to forge authorization codes and obtain admin-capable access tokens. This could lead to unauthorized administrative access within affected Keycloak deployments.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:715a5c6cc9061fc0305370a33f5b69a96ba7bfdb23b706a567b489fc05b05e06_ppc64le",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:c68d195c2d19568d9789648ef347a3388da453c83120d696453333c34a564347_arm64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:33fc8c6edb3c5c2df302ea53a89454320e08ff4660ba84d0a78f6c67178dfb16_s390x",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:a4cb583985eb220ad05b1983a98a5a50e2b76c15e6f56152045591e3994f37d1_ppc64le",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:c1c1cb36f70ca142a789b359f9a120d321f58adc44e2c97a49c2d6f270d15bd9_arm64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:dc54248ad9357fbd737e6983e6d8d0c7e845e39ed6558bd7c39f7a7573459489_amd64"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:6478"
        },
        {
          "category": "vendor_fix",
          "date": "2026-04-02T13:53:32+00:00",
          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.2.15"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:6475"
        },
        {
          "category": "vendor_fix",
          "date": "2026-04-02T13:54:47+00:00",
          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.4.11"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:6477"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "9Base-RHBK-26.2:rhbk/keycloak-operator-bundle@sha256:d80f27078e17321d4b194820a9c325c47b8cc3e431ac37c84a6c5b2b52b009e6_amd64",
            "9Base-RHBK-26.2:rhbk/keycloak-rhel9-operator@sha256:1880e406eab1303dd1faa08694ff2cb33901e1e69272a2f9cdf5f5af6941bd84_arm64",
            "9Base-RHBK-26.2:rhbk/keycloak-rhel9-operator@sha256:31378e237970d0c5c483ec2dd3de6a39adfb7cdfe13c5d106be39088859271e6_amd64",
            "9Base-RHBK-26.2:rhbk/keycloak-rhel9-operator@sha256:47fa46896eda2f3c51657f6bc9a024d63f3d306f4726ead3fa46ef5796696e07_ppc64le",
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            "9Base-RHBK-26.2:rhbk/keycloak-rhel9@sha256:10b97dd8e38ce50457a121e53d53472877cc3aa185e7c4b23da191c00e914af2_arm64",
            "9Base-RHBK-26.2:rhbk/keycloak-rhel9@sha256:4065d584a57daa2aa2259afa19844f6308e2f6a252b08738c809002cc84aa606_s390x",
            "9Base-RHBK-26.2:rhbk/keycloak-rhel9@sha256:4c4f3e098f715efc174a4a01803b7133ca7c2b744ea4b8151c7edcae608d9531_ppc64le",
            "9Base-RHBK-26.2:rhbk/keycloak-rhel9@sha256:b3fe3f4c74e96a2daf735fe5e8df98b2fa6f023cfda0c7cd4915a83556e14efb_amd64",
            "9Base-RHBK-26.4:rhbk/keycloak-operator-bundle@sha256:7fb041b0e2b43954c3a83b58fd885b1cdc5bb32275e06c4c72955da5b78255c3_amd64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:0d90a1c28652b5f73ea90f78968548178cf710121fcb13774a467aeb9c30ab09_s390x",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:1a7ac3c798d83cc37dd750ed44223630f4ebff937534a59a9e9ad029dbf31a0f_amd64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:715a5c6cc9061fc0305370a33f5b69a96ba7bfdb23b706a567b489fc05b05e06_ppc64le",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:c68d195c2d19568d9789648ef347a3388da453c83120d696453333c34a564347_arm64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:33fc8c6edb3c5c2df302ea53a89454320e08ff4660ba84d0a78f6c67178dfb16_s390x",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:a4cb583985eb220ad05b1983a98a5a50e2b76c15e6f56152045591e3994f37d1_ppc64le",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:c1c1cb36f70ca142a789b359f9a120d321f58adc44e2c97a49c2d6f270d15bd9_arm64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:dc54248ad9357fbd737e6983e6d8d0c7e845e39ed6558bd7c39f7a7573459489_amd64",
            "Red Hat build of Keycloak 26.2.15",
            "Red Hat build of Keycloak 26.4.11"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
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            "9Base-RHBK-26.2:rhbk/keycloak-rhel9@sha256:b3fe3f4c74e96a2daf735fe5e8df98b2fa6f023cfda0c7cd4915a83556e14efb_amd64",
            "9Base-RHBK-26.4:rhbk/keycloak-operator-bundle@sha256:7fb041b0e2b43954c3a83b58fd885b1cdc5bb32275e06c4c72955da5b78255c3_amd64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:0d90a1c28652b5f73ea90f78968548178cf710121fcb13774a467aeb9c30ab09_s390x",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:1a7ac3c798d83cc37dd750ed44223630f4ebff937534a59a9e9ad029dbf31a0f_amd64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:715a5c6cc9061fc0305370a33f5b69a96ba7bfdb23b706a567b489fc05b05e06_ppc64le",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:c68d195c2d19568d9789648ef347a3388da453c83120d696453333c34a564347_arm64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:33fc8c6edb3c5c2df302ea53a89454320e08ff4660ba84d0a78f6c67178dfb16_s390x",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:a4cb583985eb220ad05b1983a98a5a50e2b76c15e6f56152045591e3994f37d1_ppc64le",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:c1c1cb36f70ca142a789b359f9a120d321f58adc44e2c97a49c2d6f270d15bd9_arm64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:dc54248ad9357fbd737e6983e6d8d0c7e845e39ed6558bd7c39f7a7573459489_amd64",
            "Red Hat build of Keycloak 26.2.15",
            "Red Hat build of Keycloak 26.4.11"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important",
          "product_ids": [
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            "9Base-RHBK-26.4:rhbk/keycloak-operator-bundle@sha256:7fb041b0e2b43954c3a83b58fd885b1cdc5bb32275e06c4c72955da5b78255c3_amd64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:0d90a1c28652b5f73ea90f78968548178cf710121fcb13774a467aeb9c30ab09_s390x",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:1a7ac3c798d83cc37dd750ed44223630f4ebff937534a59a9e9ad029dbf31a0f_amd64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:715a5c6cc9061fc0305370a33f5b69a96ba7bfdb23b706a567b489fc05b05e06_ppc64le",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9-operator@sha256:c68d195c2d19568d9789648ef347a3388da453c83120d696453333c34a564347_arm64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:33fc8c6edb3c5c2df302ea53a89454320e08ff4660ba84d0a78f6c67178dfb16_s390x",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:a4cb583985eb220ad05b1983a98a5a50e2b76c15e6f56152045591e3994f37d1_ppc64le",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:c1c1cb36f70ca142a789b359f9a120d321f58adc44e2c97a49c2d6f270d15bd9_arm64",
            "9Base-RHBK-26.4:rhbk/keycloak-rhel9@sha256:dc54248ad9357fbd737e6983e6d8d0c7e845e39ed6558bd7c39f7a7573459489_amd64",
            "Red Hat build of Keycloak 26.2.15",
            "Red Hat build of Keycloak 26.4.11"
          ]
        }
      ],
      "title": "keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw"
    }
  ]
}