Security advisory

{
  "id": "02ec1c4667d1d1f23d2adaa1fb4c8f1089fe18fc179bddb9b09dc333521c324d",
  "url": "https://osv.dev/vulnerability/CVE-2017-18914",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-18914",
    "summary": "An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. An external link can occur on an error page even if it is not on an allowlist.",
    "evidence": "osv:CVE-2017-18914",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2017-18914",
      "aliases": [
        "CVE-2017-18914"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mattermost/mattermost",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "584146b9b9b5d44359475f1b815b2306e130bbf2"
                },
                {
                  "introduced": "8568afe5b4fb4d26b14fbc0d21f088eaa490b314"
                },
                {
                  "fixed": "93e3981de93ce829fac9306ca8ede376b3c3fc14"
                },
                {
                  "introduced": "30974533941e73f102505d07badf538cfdbbf3fc"
                },
                {
                  "fixed": "dd1db760e378d2df7a52976e812f77f54f85c2c0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.6.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.7.0"
                      },
                      {
                        "fixed": "3.7.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.8.0"
                      },
                      {
                        "fixed": "3.8.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.7.5-rc1",
            "v3.6.7-rc1",
            "v3.8.1",
            "v3.7.4",
            "v3.6.6",
            "v3.8.0",
            "v3.7.3",
            "v3.6.5",
            "v3.6.4",
            "v3.7.2",
            "v3.7.1",
            "v3.7.0",
            "v3.6.3",
            "v3.6.2",
            "v3.6.1",
            "v3.6.0",
            "v0.5.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-18914.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:00.978572058Z",
      "provider": "osv",
      "references": [
        "https://mattermost.com/security-updates/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-18914",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 439674,
  "published_at": "2020-06-19T20:15:12.367+00:00"
}