CVE-2026-55186 json
Silverstripe MFA: Can bypass MFA during password reset flow
published 2026-10-29 10 d ago modified 2026-11-03 5 d ago also GHSA-68wq-phq7-p2vg , EUVD-2026-116372
- cvss
- 4.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist silverstripe/mfa 6.0.0
- github.com/silverstripe/silverstripe-framework@4b5cbd7 commit
- github.com/silverstripe/silverstripe-mfa@04a102b commit
- github.com/silverstripe/silverstripe-framework#11686 pull request
- github.com/silverstripe/silverstripe-mfa#603 pull request
- github.com/silverstripe/silverstripe-mfa/releases/tag/6.0.0 release
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 d ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | silverstripe/mfa | <6.0.0 |
6.0.0 |
Affected products
- silverstripe silverstripe-mfa
Classification
- Weakness
-
- CWE-288 Authentication Bypass Using an Alternate Path or Channel
References
- github.com /silverstripe/silverstripe-framework/pull/11686
- github.com /silverstripe/silverstripe-mfa/pull/603
- github.com /silverstripe/silverstripe-framework/commit/4b5cbd7ddf68721d8119583f0b9c04d4b4adc704
- github.com /silverstripe/silverstripe-mfa/commit/04a102b662ac2f555acc26f8d2e2d8dab3937a6a
-
github.com
/silverstripe/silverstripe-mfa/security/advisories/GHSA-68wq-phq7-p2vg
web
-
github.com
/silverstripe/silverstripe-mfa/releases/tag/6.0.0
web
-
silverstripe.org
/download/security-releases/cve-2026-55186
web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/silverstripe/mfa/CVE-2026-55186.yaml
web
-
github.com
/silverstripe/silverstripe-mfa
package
Sources
- CVE List CVE-2026-55186
- GitHub Advisory GHSA-68wq-phq7-p2vg
- NVD CVE-2026-55186
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.