{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.3.4"
              },
              {
                "introduced": "4.4.0"
              },
              {
                "fixed": "4.4.5"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "4.5.0-rc1"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "4.5.0-rc2"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "4.5.0-rc3"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "4.5.0-rc4"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8f6bb1570dd234c63de5241eff9fbb268aad358c"
            },
            {
              "introduced": "a0017f184578d4d6250a9b54b50e656524078949"
            },
            {
              "fixed": "3890bc7079bf21330efdc45ae2741a4392d99e3c"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "5358b9c42cc99f72e7844062f28b2ddc3642a339"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "03f5c939deb4a6ab2fd01639b5570799e4118bab"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "03f5c939deb4a6ab2fd01639b5570799e4118bab"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "03f5c939deb4a6ab2fd01639b5570799e4118bab"
            }
          ],
          "repo": "https://github.com/mattermost/mattermost-server",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "An issue was discovered in Mattermost Server before 4.5.0, 4.4.5, and 4.3.4. It mishandled webhook access control in the EnableOnlyAdminIntegrations case.",
  "id": "CVE-2017-18870",
  "modified": "2026-03-13T21:54:55.304717960Z",
  "published": "2020-06-19T17:15:11.787Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://mattermost.com/security-updates/"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}