Security advisory

{
  "id": "2de98e77cc1eee39ff291800c7fba09484510e85517cf18deed052a8e1592456",
  "url": "https://osv.dev/vulnerability/CVE-2020-18985",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-18985",
    "summary": "An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers to redirect users to any arbitrary website of their choosing.",
    "evidence": "osv:CVE-2020-18985",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-18985",
      "aliases": [
        "CVE-2020-18985"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/zimbra/zm-build",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a3f5dae50fd9c34d9802c5fb2783dd130a600eff"
                },
                {
                  "last_affected": "a3f5dae50fd9c34d9802c5fb2783dd130a600eff"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.12:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.8.12-NA"
                      },
                      {
                        "last_affected": "8.8.12-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.8.12-NA",
            "8.8.12"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-18985.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/zimbra/zm-mailbox",
              "type": "GIT",
              "events": [
                {
                  "introduced": "85d81f636d6cb4ce5a66ac5823494ecb78f84b95"
                },
                {
                  "last_affected": "85d81f636d6cb4ce5a66ac5823494ecb78f84b95"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.12:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.8.12-NA"
                      },
                      {
                        "last_affected": "8.8.12-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.8.12-NA",
            "8.8.12"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-18985.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/zimbra/zm-zcs",
              "type": "GIT",
              "events": [
                {
                  "introduced": "aa13056509ffbbf7434066e6280b0f0208307268"
                },
                {
                  "last_affected": "aa13056509ffbbf7434066e6280b0f0208307268"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.12:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.8.12-NA"
                      },
                      {
                        "last_affected": "8.8.12-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.8.12-NA",
            "8.8.12"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-18985.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/zimbra/zm-zcs-lib",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8fc797a26d4b5bc40b8d3fc124c89e30e20a8790"
                },
                {
                  "last_affected": "8fc797a26d4b5bc40b8d3fc124c89e30e20a8790"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.12:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.8.12-NA"
                      },
                      {
                        "last_affected": "8.8.12-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.8.12-NA",
            "8.8.12"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-18985.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:46.022104673Z",
      "provider": "osv",
      "references": [
        "https://github.com/buxu/bug/issues/3"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-18985",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 436247,
  "published_at": "2021-12-15T23:15:08.74+00:00"
}