GHSA-58W6-W55X-6WQ8

Vulnerability from github – Published: 2025-12-02 12:30 – Updated: 2025-12-03 14:04
VLAI?
Summary
Mattermost fails to validate user permissions in Boards
Details

Mattermost versions 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to

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/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.0-20250905150616-ba86dfc5876b"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.11.0"
            },
            {
              "fixed": "10.11.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.5.0"
            },
            {
              "fixed": "10.5.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-13870"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284",
      "CWE-306"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-03T14:04:16Z",
    "nvd_published_at": "2025-12-02T10:16:01Z",
    "severity": "LOW"
  },
  "details": "Mattermost versions 10.11.x \u003c= 10.11.4, 10.5.x \u003c= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to",
  "id": "GHSA-58w6-w55x-6wq8",
  "modified": "2025-12-03T14:04:16Z",
  "published": "2025-12-02T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13870"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/mattermost/commit/ba86dfc5876b354b9d3c20ff45c08ca6f8426149"
    },
    {
      "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 fails to validate user permissions in Boards"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.