{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "9.5.0"
              },
              {
                "fixed": "9.5.9"
              },
              {
                "introduced": "9.9.0"
              },
              {
                "fixed": "9.9.3"
              },
              {
                "introduced": "9.10.0"
              },
              {
                "fixed": "9.10.2"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "99d819d25d0b16b3faed901b1fe5c41de7655e9c"
            },
            {
              "fixed": "e8de27b043b2971472f30cb2e6c77bf4f8978486"
            },
            {
              "introduced": "4179e17b491ec5292ca6e157d7b216b464bce397"
            },
            {
              "fixed": "8f059c576a6fec5dad8b8b1e62bf2a5602081401"
            },
            {
              "introduced": "60c5bb46dfa8192efa5a13c746423f0e7696b8bc"
            },
            {
              "fixed": "3b1cbb8015fed0484e573d78e3b0fd28f2fc8b91"
            }
          ],
          "repo": "https://github.com/mattermost/mattermost",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Mattermost",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/9xxx/CVE-2024-9155.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "9.10.0"
          },
          {
            "last_affected": "9.10.1"
          },
          {
            "introduced": "9.9.0"
          },
          {
            "last_affected": "9.9.2"
          },
          {
            "introduced": "9.5.0"
          },
          {
            "last_affected": "9.5.8"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Mattermost versions 9.10.x \u003c= 9.10.1, 9.9.x \u003c= 9.9.2, 9.5.x \u003c= 9.5.8 fail to limit access to channels files that have not been linked to a post which allows an attacker to view them in channels that they are a member of.",
  "id": "CVE-2024-9155",
  "modified": "2026-08-12T03:51:19.286126932Z",
  "published": "2024-09-26T14:57:43.987Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/9xxx/CVE-2024-9155.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-9155"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Insufficient Authorization On Unlinked Channel Files"
}