GHSA-9C5Q-W6GR-FXCQ

Vulnerability from github – Published: 2025-11-06 21:31 – Updated: 2025-11-06 23:50
VLAI?
Summary
MQTT does not validate hostnames
Details

A flaw was found in Rubygem MQTT. By default, the package used to not have hostname validation, resulting in possible Man-in-the-Middle (MITM) attack.

Severity ?
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "mqtt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-12790"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-29"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-11-06T23:50:27Z",
    "nvd_published_at": "2025-11-06T21:15:40Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in Rubygem MQTT. By default, the package used to not have hostname validation, resulting in possible Man-in-the-Middle (MITM) attack.",
  "id": "GHSA-9c5q-w6gr-fxcq",
  "modified": "2025-11-06T23:50:27Z",
  "published": "2025-11-06T21:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-12790"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2025-12790"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2413004"
    },
    {
      "type": "WEB",
      "url": "https://github.com/njh/ruby-mqtt/blob/main/NEWS.md#ruby-mqtt-version-070-2025-10-29"
    },
    {
      "type": "PACKAGE",
      "url": "http://github.com/njh/ruby-mqtt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "MQTT does not validate hostnames"
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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