CVE-2026-55186
Medium
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.
SeverityMedium
CVSS4.2
Exploit probability20. percentile0.3%
ProductSilverstripe/mfa
PublishedNov 3, 2026
First seenNov 4, 2026
Weakness typeCWE-288CWE-288
How to fix
Update
- silverstripe/mfa6.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| silverstripe/mfaPackagist | v < 6.0.0 | 6.0.0 |
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