Security advisory

{
  "id": "b00de5bd19f2d23693f40396ecd83cdeacedb970013d9ba10aedb2be15144adb",
  "url": "https://osv.dev/vulnerability/CVE-2017-1000071",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-1000071",
    "summary": "Jasig phpCAS version 1.3.4 is vulnerable to an authentication bypass in the validateCAS20 function when configured to authenticate against an old CAS server.",
    "evidence": "osv:CVE-2017-1000071",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2017-1000071",
      "aliases": [
        "CVE-2017-1000071"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apereo/phpcas",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8c74d21630f74278270830fdbdb0c1317bce3f0a"
                },
                {
                  "last_affected": "8c74d21630f74278270830fdbdb0c1317bce3f0a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apereo:phpcas:1.3.4:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.3.4"
                      },
                      {
                        "last_affected": "1.3.4"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.3.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-1000071.json"
          }
        }
      ],
      "modified": "2026-10-24T10:49:27.282649505Z",
      "provider": "osv",
      "references": [
        "https://github.com/Jasig/phpCAS/blob/master/docs/ChangeLog",
        "https://github.com/Jasig/phpCAS/issues/228"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-1000071",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 441697,
  "published_at": "2017-07-17T13:18:18.267+00:00"
}