{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2024.1.6"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1f7bf7c2a9d42cc1a9b74420e601b5e0a76493c1"
            }
          ],
          "repo": "https://github.com/home-assistant/core",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m3pm-rpgg-5wj6"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-940"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/25xxx/CVE-2025-25305.json"
  },
  "details": "Home Assistant Core is an open source home automation that puts local control and privacy first. Affected versions are subject to a potential man-in-the-middle attacks due to missing SSL certificate verification in the project codebase and used third-party libraries. In the past, `aiohttp-session`/`request` had the parameter `verify_ssl` to control SSL certificate verification. This was a boolean value. In `aiohttp` 3.0, this parameter was deprecated in favor of the `ssl` parameter. Only when `ssl` is set to `None` or provided with a correct configured SSL context the standard SSL certificate verification will happen. When migrating integrations in Home Assistant and libraries used by Home Assistant, in some cases the `verify_ssl` parameter value was just moved to the new `ssl` parameter. This resulted in these integrations and 3rd party libraries using `request.ssl = True`, which unintentionally turned off SSL certificate verification and opened up a man-in-the-middle attack vector. This issue has been addressed in version 2024.1.6 and all users are advised to upgrade. There are no known workarounds for this vulnerability.",
  "id": "CVE-2025-25305",
  "modified": "2025-12-04T02:34:01.073379498Z",
  "published": "2025-02-18T18:53:10.870Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/25xxx/CVE-2025-25305.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/home-assistant/core/security/advisories/GHSA-m3pm-rpgg-5wj6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-25305"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "SSL validation for outgoing requests in Home Assistant Core and used libs not correct"
}