{"apiVersion":"1.0","identifier":"CVE-2026-59825","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.","publishedAt":"2026-08-18T15:16:55","lastModifiedAt":"2026-08-18T16:18:11","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59825","cvssScore":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","epssProbability":0.00347,"riskScore":0.76,"affectedProduct":"Mastodon","affectedVersions":"<4.4.19, >=4.5.0,<4.5.12","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-59825","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-59825","en":"https://www.redsauce.net/en/cves/CVE-2026-59825","fr":"https://www.redsauce.net/fr/cves/CVE-2026-59825","pt":"https://www.redsauce.net/pt/cves/CVE-2026-59825","de":"https://www.redsauce.net/de/cves/CVE-2026-59825","sk":"https://www.redsauce.net/sk/cves/CVE-2026-59825","el":"https://www.redsauce.net/el/cves/CVE-2026-59825"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-59825"}}