Security advisory

{
  "id": "4deaf1fd819a5a08bef8fb688d4b8f6125f989b7f8f86708f07dfbe559c5188b",
  "url": "https://osv.dev/vulnerability/CVE-2017-18901",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-18901",
    "summary": "An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. It allows attackers to discover a team invite ID by requesting a JSON document.",
    "evidence": "osv:CVE-2017-18901",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2017-18901",
      "aliases": [
        "CVE-2017-18901",
        "GHSA-c253-8hr4-r8v9",
        "GO-2026-4304"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mattermost/mattermost",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "f7f675d1a0c10f58f8b66e402be2e0e11b22ffde"
                },
                {
                  "introduced": "9a23519d07664f252fe5a568034abf6b720511d0"
                },
                {
                  "fixed": "e65e301360f00938b9aea36949afcae67871f245"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.10.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.0.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.0.3",
            "v3.10.2",
            "v4.0.2",
            "v4.0.1",
            "v4.0.0",
            "v3.10.1",
            "v3.10.0",
            "v0.5.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-18901.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:15.440646459Z",
      "provider": "osv",
      "references": [
        "https://mattermost.com/security-updates/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-18901",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429143,
  "published_at": "2020-06-19T19:15:11.577+00:00"
}