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CVE-2026-1035 Org.keycloak.protocol.oidc: keycloak refresh token reuse bypass via toctou race condition

🗓️ 21 Jan 2026 05:52:22Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 18 Views

Keycloak refresh token rotation bypass due to non-atomic TokenManager validation, enabling token reuse in concurrent requests.

Related
Affected
Refs
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.4",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-operator-bundle",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.4.11-1",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.4",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-rhel9",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.4-14",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.4",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-rhel9-operator",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.4-14",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.4.11",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "unaffected",
    "packageName": "rhbk/keycloak-rhel9",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat JBoss Enterprise Application Platform 8",
    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_enterprise_application_platform:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jbosseapxp"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Single Sign-On 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:red_hat_single_sign_on:7"
    ]
  }
]

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