Security advisory

{
  "id": "db652e2dd2debda6d3b3af47d1715d0c352f7b6210ccd238f0269d8325420923",
  "url": "https://osv.dev/vulnerability/CVE-2016-2167",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-2167",
    "summary": "The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.",
    "evidence": "osv:CVE-2016-2167",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2016-2167",
      "aliases": [
        "CVE-2016-2167"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/subversion",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "3dec6a0529685631fa7a4975a59424f815f121cb"
                },
                {
                  "introduced": "d5c449a05c043ec247cb68cb2bbb891779eb8566"
                },
                {
                  "last_affected": "e03e7ac2e5341db1dc6646ecbd5893fc72f7d5cd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:subversion:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.8.15"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:subversion:1.9.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.9.0"
                      },
                      {
                        "last_affected": "1.9.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:subversion:1.9.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.9.1"
                      },
                      {
                        "last_affected": "1.9.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:subversion:1.9.2:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.9.2"
                      },
                      {
                        "last_affected": "1.9.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:subversion:1.9.3:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.9.3"
                      },
                      {
                        "last_affected": "1.9.3"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.9.0",
            "1.9.1",
            "1.9.2",
            "1.9.3",
            "1.8.15"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-2167.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:38.163108956Z",
      "provider": "osv",
      "references": [
        "https://www.oracle.com/security-alerts/cpuoct2020.html",
        "https://security.gentoo.org/glsa/201610-05"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2016-2167",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 434376,
  "published_at": "2016-05-05T18:59:00.117+00:00"
}