GHSA-X3HX-CH7P-8XGG

Vulnerability from github – Published: 2025-11-14 09:30 – Updated: 2025-11-17 17:50
VLAI?
Summary
Mattermost allows regular users to access archived channel content and files
Details

Mattermost versions < 11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads

Severity ?
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "11.0.0-alpha.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.0-20250815165020-c8d66301415d"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-41436"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-11-17T17:50:34Z",
    "nvd_published_at": "2025-11-14T08:15:45Z",
    "severity": "LOW"
  },
  "details": "Mattermost versions \u003c 11.0 fail to properly enforce the \"Allow users to view archived channels\" setting which allows regular users to access archived channel content and files via the \"Open in Channel\" functionality from followed threads",
  "id": "GHSA-x3hx-ch7p-8xgg",
  "modified": "2025-11-17T17:50:34Z",
  "published": "2025-11-14T09:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-41436"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/c8d66301415d5b447df0e829bdbaa92e8a83ecf8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mattermost allows regular users to access archived channel content and files"
}


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