CVE-2026-55186 Silverstripe MFA: Can bypass MFA during password reset flow
MediumCVSS 4.2
EPSS 0.28%
PoC
- Published
- Updated
- Exploit status
- Proof-of-concept only
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| silverstripe/mfa(Packagist) | < 6.0.0 | 6.0.0 |
| silverstripe/mfa(Packagist) | = 3.0.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 3.0.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 3.0.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.0-beta2 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.0-beta3 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.0-beta4 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.0-rc2 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.2 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.3 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.4 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.5 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.0.6 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.1.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.1.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.2.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.2.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.2.2 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.3.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.3.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.3.0-rc1 | No fix listed |
Show 49 more
| Product | Affected versions | Fixed in |
|---|---|---|
| silverstripe/mfa(Packagist) | = 4.4.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.4.0-alpha1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.4.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.4.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.5.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.5.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.6.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.6.2 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.6.3 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.7.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.7.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.7.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.8.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.8.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.8.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.8.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.8.2 | No fix listed |
| silverstripe/mfa(Packagist) | = 4.8.3 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.0.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.0.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.0.0-beta2 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.0.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.0.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.1.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.1.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.1.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.1.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.2.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.2.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.2.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.2.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.2.2 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.2.3 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.2.4 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.3.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.3.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.3.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.3.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.4.0 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.4.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.4.0-rc1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.4.1 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.4.2 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.4.3 | No fix listed |
| silverstripe/mfa(Packagist) | = 5.4.4 | No fix listed |
| silverstripe/mfa(Packagist) | = 6.0.0-alpha1 | No fix listed |
| silverstripe/mfa(Packagist) | = 6.0.0-beta1 | No fix listed |
| silverstripe/mfa(Packagist) | = 6.0.0-rc1 | No fix listed |
| silverstripe-mfa | = < 6.0.0 | No fix listed |
References
- https://github.com/silverstripe/silverstripe-mfa/security/advisories/GHSA-68wq-phq7-p2vg vendor-advisory
- github.com exploit
- github.com product
- https://github.com/silverstripe/silverstripe-mfa/releases/tag/6.0.0
- https://www.silverstripe.org/download/security-releases/cve-2026-55186
- https://github.com/silverstripe/silverstripe-framework/pull/11686
- https://github.com/silverstripe/silverstripe-mfa/pull/603
- https://github.com/silverstripe/silverstripe-framework/commit/4b5cbd7ddf68721d8119583f0b9c04d4b4adc704
- https://github.com/silverstripe/silverstripe-mfa/commit/04a102b662ac2f555acc26f8d2e2d8dab3937a6a
- github.com