{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "10.11.0"
              },
              {
                "fixed": "10.11.18"
              },
              {
                "introduced": "11.5.0"
              },
              {
                "fixed": "11.5.6"
              },
              {
                "introduced": "11.6.0"
              },
              {
                "fixed": "11.6.3"
              },
              {
                "introduced": "11.7.0"
              },
              {
                "fixed": "11.7.1"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "5b955468ea1ea8b56c0fb10feb258a36a767d7bb"
            },
            {
              "fixed": "79ba3d3d83ef1562d08ffd2d29d3d9cc2636a41c"
            },
            {
              "introduced": "9f2616376582893035a7e3cb38b0fab648bba4e8"
            },
            {
              "fixed": "16c42cd8677fcc91383da3b0cc85b8c9c0c231c3"
            },
            {
              "introduced": "d4f4e78835e86e2e76f76bfe797623076f5c9835"
            },
            {
              "fixed": "429426801b599699c8bef584447e5f4c6f09f035"
            },
            {
              "introduced": "a9e574a82633915f22071f0d7ca2b006f249ec2a"
            },
            {
              "fixed": "de117ab1cc09f4114aa7cb716fe760946ae7696c"
            }
          ],
          "repo": "https://github.com/mattermost/mattermost",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Mattermost",
    "cwe_ids": [
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6062.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "11.7.0"
          },
          {
            "last_affected": "11.7.0"
          },
          {
            "introduced": "11.6.0"
          },
          {
            "last_affected": "11.6.2"
          },
          {
            "introduced": "11.5.0"
          },
          {
            "last_affected": "11.5.5"
          },
          {
            "introduced": "10.11.0"
          },
          {
            "last_affected": "10.11.17"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Mattermost versions 11.7.x \u003c= 11.7.0, 11.6.x \u003c= 11.6.2, 11.5.x \u003c= 11.5.5, 10.11.x \u003c= 10.11.17 Fail to validate channel ownership of an existing subscription before applying edits which allows an authenticated attacker to hijack subscriptions from channels they have no access to via a crafted PUT request to the subscription edit endpoint.. Mattermost Advisory ID: MMSA-2026-00650",
  "id": "CVE-2026-6062",
  "modified": "2026-07-08T05:38:52.311862709Z",
  "published": "2026-06-22T13:40:07.776Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6062.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://mattermost.com/security-updates"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6062"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "IDOR in Jira plugin subscription edit endpoint"
}