Security advisory

{
  "id": "e8b94b6e349767a30e573982c49a3cfacdde979047401ffd2913a5f8d54bf5e6",
  "url": "https://osv.dev/vulnerability/CVE-2019-18928",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-18928",
    "summary": "Cyrus IMAP 2.5.x before 2.5.14 and 3.x before 3.0.12 allows privilege escalation because an HTTP request may be interpreted in the authentication context of an unrelated previous request that arrived over the same connection.",
    "evidence": "osv:CVE-2019-18928",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-18928",
      "aliases": [
        "CVE-2019-18928"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cyrusimap/cyrus-imapd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5549888feb02784120b7ef0c8a26390b83125108"
                },
                {
                  "fixed": "8bec158a9339eb6b9c4812b8339cb4d442e543ac"
                },
                {
                  "introduced": "65c252b8a3a05c09b3425ce96e1dc6a11dabbe4a"
                },
                {
                  "fixed": "1b3505c9d82118535791ac7c66519865f51d02f4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.5.0"
                      },
                      {
                        "fixed": "2.5.14"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.0.12"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "cyrus-imapd-3.0.11",
            "cyrus-imapd-2.5.13",
            "cyrus-imapd-3.0.10",
            "cyrus-imapd-3.0.9",
            "cyrus-imapd-2.5.12",
            "cyrus-imapd-3.0.8",
            "cyrus-imapd-3.0.7",
            "cyrus-imapd-3.0.6",
            "cyrus-imapd-3.0.5",
            "cyrus-imapd-3.0.4",
            "cyrus-imapd-3.0.3",
            "cyrus-imapd-3.0.2",
            "cyrus-imapd-2.5.11",
            "cyrus-imapd-3.0.1",
            "cyrus-imapd-3.0.0",
            "cyrus-imapd-2.5.10",
            "cyrus-imapd-2.5.9",
            "cyrus-imapd-2.5.8",
            "cyrus-imapd-2.5.7",
            "cyrus-imapd-2.5.6",
            "cyrus-imapd-2.5.5",
            "cyrus-imapd-2.5.4",
            "cyrus-imapd-2.5.3",
            "cyrus-imapd-2.5.2",
            "cyrus-imapd-2.5.1",
            "cyrus-imapd-2.5.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18928.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:26.133689557Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LAGKPZDXQ6KRUGQVRAO6N4PCINP6KS5F/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PHV3TUU53WCKJ3BBRK2EHAF44MSZEFK6/",
        "https://lists.debian.org/debian-lts-announce/2022/06/msg00013.html",
        "https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.14.html",
        "https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.12.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "30"
                  },
                  {
                    "last_affected": "30"
                  },
                  {
                    "introduced": "31"
                  },
                  {
                    "last_affected": "31"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-18928",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431541,
  "published_at": "2019-11-15T04:15:10.267+00:00"
}