FKIE_CVE-2026-59825

Vulnerability from fkie_nvd - Published: 2026-08-18 15:16 - Updated: 2026-08-18 16:18
Severity
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/mastodon/mastodon/commit/2ccb6ef277e725d1932295690cf8ab9d3dc03149
security-advisories@github.comhttps://github.com/mastodon/mastodon/commit/5748d0b16ea09001e0933f76c7afe814e09652ef
security-advisories@github.comhttps://github.com/mastodon/mastodon/commit/761c61b42590a2fd91442fc15a0a7583e48bbea4
security-advisories@github.comhttps://github.com/mastodon/mastodon/pull/39571
security-advisories@github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.4.19
security-advisories@github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.5.12
security-advisories@github.comhttps://github.com/mastodon/mastodon/security/advisories/GHSA-3rhr-8phh-jm86
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "mastodon",
          "vendor": "mastodon",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.4.19"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.5.0, \u003c 4.5.12"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2026-59825",
  "lastModified": "2026-08-18T16:18:11.260",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-59825",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-18T15:51:09.488217Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-18T15:16:55.623",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/commit/2ccb6ef277e725d1932295690cf8ab9d3dc03149"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/commit/5748d0b16ea09001e0933f76c7afe814e09652ef"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/commit/761c61b42590a2fd91442fc15a0a7583e48bbea4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/pull/39571"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.4.19"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/releases/tag/v4.5.12"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-3rhr-8phh-jm86"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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