Security advisory

{
  "id": "7a096e89b6bfa8ce6c7e6207e02be3fd186ddc089ac83383ed688b07ba6da3ea",
  "url": "https://osv.dev/vulnerability/CVE-2018-10894",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-10894",
    "summary": "It was found that SAML authentication in Keycloak 3.4.3.Final incorrectly authenticated expired certificates. A malicious user could use this to access unauthorized data or possibly conduct further attacks.",
    "evidence": "osv:CVE-2018-10894",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-10894",
      "aliases": [
        "CVE-2018-10894",
        "GHSA-xvv8-8wh9-9fh2"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/keycloak/keycloak",
              "type": "GIT",
              "events": [
                {
                  "introduced": "517588ecca8e8749c70c7a28706fc405623617d3"
                },
                {
                  "last_affected": "517588ecca8e8749c70c7a28706fc405623617d3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:redhat:keycloak:3.4.3:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.4.3"
                      },
                      {
                        "last_affected": "3.4.3"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.4.3",
            "3.4.3.Final"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-10894.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:30.112908103Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/errata/RHSA-2018:3592",
        "https://access.redhat.com/errata/RHSA-2018:3593",
        "https://access.redhat.com/errata/RHSA-2018:3595",
        "https://access.redhat.com/errata/RHSA-2019:0877",
        "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10894"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:redhat:single_sign-on:7.2:*:*:*:*:*:*:*"
            ],
            "vendor_product": "redhat:single_sign-on",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "7.2"
                  },
                  {
                    "last_affected": "7.2"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-10894",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 432489,
  "published_at": "2018-08-01T17:29:00.347+00:00"
}