Vulnerability from bitnami_vulndb
Published
2026-08-24 05:45
Modified
2026-08-24 06:09
Summary
Mastodon: Unwanted deactivation of SSL/TLS certificate verification
Details

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.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "mastodon",
        "purl": "pkg:bitnami/mastodon"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.4.19"
            },
            {
              "introduced": "4.5.0"
            },
            {
              "fixed": "4.5.12"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-59825"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "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\u0027s 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.",
  "id": "BIT-mastodon-2026-59825",
  "modified": "2026-08-24T06:09:24.796Z",
  "published": "2026-08-24T05:45:37.108Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mastodon/mastodon/commit/2ccb6ef277e725d1932295690cf8ab9d3dc03149"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mastodon/mastodon/commit/5748d0b16ea09001e0933f76c7afe814e09652ef"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mastodon/mastodon/commit/761c61b42590a2fd91442fc15a0a7583e48bbea4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mastodon/mastodon/pull/39571"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.4.19"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.5.12"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-3rhr-8phh-jm86"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59825"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Mastodon: Unwanted deactivation of SSL/TLS certificate verification"
}



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