{
  "id": "CVE-2026-59825",
  "url": "https://spydr.io/cve/CVE-2026-59825",
  "published": "2026-08-18T15:16:55.623Z",
  "modified": "2026-09-16T13:42:44.293Z",
  "score": 7.4,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "score_source": "github.com",
  "epss": 0.00373,
  "epss_percentile": 0.28916,
  "exploited": false,
  "kev": null,
  "ssvc_exploitation": "none",
  "vendors": [
    "mastodon"
  ],
  "products": [
    "mastodon"
  ],
  "cwes": [
    "CWE-295"
  ],
  "description": "Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.19 and from 4.5.0 until 4.5.12, Mastodon's app/models/concerns/user/ldap_authenticable.rb mutates OpenSSL::SSL::SSLContext::DEFAULT_PARAMS when LDAP authentication uses LDAP_TLS_NO_VERIFY=true, disabling SSL and TLS certificate verification globally for requests made by puma web processes while sidekiq background jobs remain unaffected. This issue is fixed in versions 4.4.19 and 4.5.12.",
  "status": "Deferred",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 7.4,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://github.com/mastodon/mastodon/commit/2ccb6ef277e725d1932295690cf8ab9d3dc03149",
      "tags": []
    },
    {
      "url": "https://github.com/mastodon/mastodon/commit/5748d0b16ea09001e0933f76c7afe814e09652ef",
      "tags": []
    },
    {
      "url": "https://github.com/mastodon/mastodon/commit/761c61b42590a2fd91442fc15a0a7583e48bbea4",
      "tags": []
    },
    {
      "url": "https://github.com/mastodon/mastodon/pull/39571",
      "tags": []
    },
    {
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.4.19",
      "tags": []
    },
    {
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.5.12",
      "tags": []
    },
    {
      "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-3rhr-8phh-jm86",
      "tags": []
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59825",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}