{
  "schema_version": "1.4.0",
  "id": "GHSA-cw7q-5cgc-h3h9",
  "modified": "2025-03-21T22:38:09Z",
  "published": "2025-03-21T09:30:35Z",
  "aliases": [
    "CVE-2025-27715"
  ],
  "summary": "Mattermost fail to prompt for explicit approval before adding a team admin to a private channel",
  "details": "Mattermost versions 9.11.x <= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "9.11.0"
            },
            {
              "fixed": "9.11.9"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27715"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "severity": "LOW",
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-21T22:38:08Z",
    "nvd_published_at": "2025-03-21T09:15:13Z"
  }
}