{"id":"CVE-2026-59825","aliases":["BIT-mastodon-2026-59825","EUVD-2026-60953","GHSA-3rhr-8phh-jm86"],"status":"published","title":"Mastodon: Unwanted deactivation of SSL/TLS certificate verification","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.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00373,"percentile":0.31622,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-295"],"published":"2026-08-18T15:07:14Z","modified":"2026-10-28T02:30:42Z","fixes":[{"ecosystem":"Bitnami","package":"mastodon","fixed_in":["4.4.19","4.5.12"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mastodon","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.4.19"},{"introduced":"4.5.0"},{"fixed":"4.5.12"}]}]}],"products":[{"vendor":"mastodon","product":"mastodon"}],"references":[{"url":"https://github.com/mastodon/mastodon/security/advisories/GHSA-3rhr-8phh-jm86","tags":["x_refsource_CONFIRM","web","advisory"]},{"url":"https://github.com/mastodon/mastodon/pull/39571","tags":["x_refsource_MISC","web","fix"]},{"url":"https://github.com/mastodon/mastodon/commit/2ccb6ef277e725d1932295690cf8ab9d3dc03149","tags":["x_refsource_MISC","web","fix"]},{"url":"https://github.com/mastodon/mastodon/commit/5748d0b16ea09001e0933f76c7afe814e09652ef","tags":["x_refsource_MISC","web","fix"]},{"url":"https://github.com/mastodon/mastodon/commit/761c61b42590a2fd91442fc15a0a7583e48bbea4","tags":["x_refsource_MISC","web","fix"]},{"url":"https://github.com/mastodon/mastodon/releases/tag/v4.4.19","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/mastodon/mastodon/releases/tag/v4.5.12","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59825","tags":["web","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59825.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-59825","title":"Mastodon: Unwanted deactivation of SSL/TLS certificate verification","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":"published","published":"2026-08-18T15:07:14.555Z","modified":"2026-08-18T15:51:15.337Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:19:58.560602Z"}],"euvd":[{"id":"EUVD-2026-60953","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":"published","published":"2026-08-18T15:07:14Z","modified":"2026-08-18T15:51:15Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T18:01:46.405062Z"}],"nvd":[{"id":"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.","status":"published","published":"2026-08-18T15:16:55.623Z","modified":"2026-09-16T13:42:44.293Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:12:38.976695Z"}],"osv":[{"id":"CVE-2026-59825","title":"Mastodon: Unwanted deactivation of SSL/TLS certificate verification","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":"published","published":"2026-08-18T15:07:14.555Z","modified":"2026-10-28T02:30:42.445418873Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:45:12.496548Z"},{"id":"BIT-mastodon-2026-59825","title":"Mastodon: Unwanted deactivation of SSL/TLS certificate verification","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":"published","published":"2026-08-24T05:45:37.108Z","modified":"2026-08-24T08:25:58.578087443Z","updated_at":"2026-11-02T15:28:32.645004Z"}]}}