{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "26.0.16"
              },
              {
                "introduced": "26.2.0"
              },
              {
                "fixed": "26.2.10"
              },
              {
                "introduced": "26.4.0"
              },
              {
                "fixed": "26.4.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "78fa91620bbab9271d3a6f4ad7bb804140af0096"
            },
            {
              "introduced": "4cb4d2d06ed17e3a8bd928f472d3f9e4d1adea1d"
            },
            {
              "fixed": "282b8a2ba6d6135a7de661a707d30a23866b941a"
            },
            {
              "introduced": "4e25e47b3c3619b3a0593448e1dfc0dd786cfbe1"
            },
            {
              "fixed": "802e43c58ee8989a1beb8e5d905aa73c1ca21e4b"
            }
          ],
          "repo": "https://github.com/keycloak/keycloak",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "redhat",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/11xxx/CVE-2025-11419.json"
  },
  "details": "A flaw was found in Keycloak. This vulnerability allows an unauthenticated remote attacker to cause a denial of service (DoS) by repeatedly initiating TLS 1.2 client-initiated renegotiation requests to exhaust server CPU resources, making the service unavailable.",
  "id": "CVE-2025-11419",
  "modified": "2026-07-16T03:30:50.255900879Z",
  "published": "2025-12-23T20:42:38.699Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://access.redhat.com/downloads/content/package-browser/"
    },
    {
      "type": "WEB",
      "url": "https://catalog.redhat.com/software/containers/"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/discussions/25209"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2025:18254"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2025:18255"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2025:18889"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2025:18890"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2025-11419"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/11xxx/CVE-2025-11419.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11419"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402142"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/keycloak/keycloak/issues/43020"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Keycloak: keycloak tls client-initiated renegotiation denial of service"
}