{"id":"CVE-2026-55186","aliases":["EUVD-2026-116372","GHSA-68wq-phq7-p2vg"],"status":"published","title":"Silverstripe MFA: Can bypass MFA during password reset flow","description":"Silverstripe MFA provides multi-factor authentication for Silverstripe CMS. Prior to 6.0.0, the CMS 5 password reset flow can issue a logged-in session after a user changes a password but before the user's configured multi-factor authentication challenge is completed. An attacker with access to the user's email account can follow the reset flow and bypass the additional authentication factor. CMS 6 is not affected. This issue is fixed in version 6.0.0.","severity":{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00278,"percentile":0.20452,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-288"],"published":"2026-10-29T16:32:39Z","modified":"2026-11-04T10:46:46Z","fixes":[{"ecosystem":"Packagist","package":"silverstripe/mfa","fixed_in":["6.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"silverstripe/mfa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"silverstripe/mfa","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0"}]}],"versions":["3.0.0","3.0.0-rc1","3.0.1","4.0.0","4.0.0-beta1","4.0.0-beta2","4.0.0-beta3","4.0.0-beta4","4.0.0-rc1","4.0.0-rc2","4.0.1","4.0.2","4.0.3","4.0.4","4.0.5","4.0.6","4.1.0","4.1.1","4.2.0","4.2.1","4.2.2","4.3.0","4.3.0-beta1","4.3.0-rc1","4.4.0","4.4.0-alpha1","4.4.0-beta1","4.4.0-rc1","4.5.0","4.5.1","4.6.1","4.6.2","4.6.3","4.7.0","4.7.0-beta1","4.7.0-rc1","4.8.0","4.8.0-beta1","4.8.0-rc1","4.8.1","4.8.2","4.8.3","5.0.0","5.0.0-beta1","5.0.0-beta2","5.0.0-rc1","5.0.1","5.1.0","5.1.0-beta1","5.1.0-rc1","5.1.1","5.2.0","5.2.0-beta1","5.2.0-rc1","5.2.1","5.2.2","5.2.3","5.2.4","5.3.0","5.3.0-beta1","5.3.0-rc1","5.3.1","5.4.0","5.4.0-beta1","5.4.0-rc1","5.4.1","5.4.2","5.4.3","5.4.4","6.0.0-alpha1","6.0.0-beta1","6.0.0-rc1"]}],"products":[{"vendor":"silverstripe","product":"silverstripe-mfa"}],"references":[{"url":"https://github.com/silverstripe/silverstripe-mfa/security/advisories/GHSA-68wq-phq7-p2vg","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/silverstripe/silverstripe-framework/pull/11686","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/silverstripe/silverstripe-mfa/pull/603","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/silverstripe/silverstripe-framework/commit/4b5cbd7ddf68721d8119583f0b9c04d4b4adc704","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/silverstripe/silverstripe-mfa/commit/04a102b662ac2f555acc26f8d2e2d8dab3937a6a","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/silverstripe/silverstripe-mfa/releases/tag/6.0.0","tags":["x_refsource_MISC","web"]},{"url":"https://www.silverstripe.org/download/security-releases/cve-2026-55186","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/mfa/CVE-2026-55186.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-68wq-phq7-p2vg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55186.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55186","tags":["advisory"]},{"url":"https://github.com/silverstripe/silverstripe-mfa","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-55186","title":"Silverstripe MFA: Can bypass MFA during password reset flow","description":"Silverstripe MFA provides multi-factor authentication for Silverstripe CMS. Prior to 6.0.0, the CMS 5 password reset flow can issue a logged-in session after a user changes a password but before the user's configured multi-factor authentication challenge is completed. An attacker with access to the user's email account can follow the reset flow and bypass the additional authentication factor. CMS 6 is not affected. This issue is fixed in version 6.0.0.","status":"published","published":"2026-11-03T20:48:32.218Z","modified":"2026-11-03T22:39:17.905Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-288"],"updated_at":"2026-11-03T23:33:09.822755Z"}],"euvd":[{"id":"EUVD-2026-116372","description":"Silverstripe MFA provides multi-factor authentication for Silverstripe CMS. Prior to 6.0.0, the CMS 5 password reset flow can issue a logged-in session after a user changes a password but before the user's configured multi-factor authentication challenge is completed. An attacker with access to the user's email account can follow the reset flow and bypass the additional authentication factor. CMS 6 is not affected. This issue is fixed in version 6.0.0.","status":"published","published":"2026-11-03T20:48:32Z","modified":"2026-11-03T22:39:17Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-04T00:49:23.174177Z"}],"ghsa":[{"id":"GHSA-68wq-phq7-p2vg","title":"MultiFactor Authentication for SilverStripe can bypass MFA during password reset flow","description":"### Impact\nIn CMS 5, the password reset flow let a user with multi-factor authentication enabled change their password and get a logged-in session before completing multi-factor authentication. Exploiting this requires access to the user's email account. CMS 6 is not affected.","status":"published","published":"2026-10-29T16:32:39Z","modified":"2026-11-03T20:48:46Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-288"],"updated_at":"2026-11-03T21:03:55.805889Z"}],"nvd":[{"id":"CVE-2026-55186","description":"Silverstripe MFA provides multi-factor authentication for Silverstripe CMS. Prior to 6.0.0, the CMS 5 password reset flow can issue a logged-in session after a user changes a password but before the user's configured multi-factor authentication challenge is completed. An attacker with access to the user's email account can follow the reset flow and bypass the additional authentication factor. CMS 6 is not affected. This issue is fixed in version 6.0.0.","status":"published","published":"2026-11-03T21:17:38.653Z","modified":"2026-11-03T23:17:48.44Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-288"],"updated_at":"2026-11-04T01:48:44.781617Z"}],"osv":[{"id":"CVE-2026-55186","title":"Silverstripe MFA: Can bypass MFA during password reset flow","description":"Silverstripe MFA provides multi-factor authentication for Silverstripe CMS. Prior to 6.0.0, the CMS 5 password reset flow can issue a logged-in session after a user changes a password but before the user's configured multi-factor authentication challenge is completed. An attacker with access to the user's email account can follow the reset flow and bypass the additional authentication factor. CMS 6 is not affected. This issue is fixed in version 6.0.0.","status":"published","published":"2026-11-03T20:48:32.218Z","modified":"2026-11-11T10:47:34.542557839Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-288"],"updated_at":"2026-11-11T03:21:28.618498Z"},{"id":"GHSA-68wq-phq7-p2vg","title":"MultiFactor Authentication for SilverStripe can bypass MFA during password reset flow","description":"### Impact\nIn CMS 5, the password reset flow let a user with multi-factor authentication enabled change their password and get a logged-in session before completing multi-factor authentication. Exploiting this requires access to the user's email account. CMS 6 is not affected.","status":"published","published":"2026-10-29T16:32:39Z","modified":"2026-11-03T21:00:04.22567845Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-288"],"updated_at":"2026-11-03T21:05:16.218603Z"}]}}