CVE-2026-55186
Silverstripe MFA: Can bypass MFA during password reset flow
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Timeline
ID reserved
By GitHub_M
- 5 months later
· 5 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |
| NVDNVD · Received | 3.1 | Medium4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.28% · top 80% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.2.
Weakness
Affected products
silverstripe · silverstripe-mfa
- affected < 6.0.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Packagistsilverstripe/mfaGHSA-68wq-phq7-p2vg (opens in a new tab)
References (7)
- https://github.com/silverstripe/silverstripe-mfa/security/advisories/GHSA-68wq-phq7-p2vg (opens in a new tab)x_refsource_CONFIRM
- https://github.com/silverstripe/silverstripe-framework/pull/11686 (opens in a new tab)x_refsource_MISC
- https://github.com/silverstripe/silverstripe-mfa/pull/603 (opens in a new tab)x_refsource_MISC
- https://github.com/silverstripe/silverstripe-framework/commit/4b5cbd7ddf68721d8119583f0b9c04d4b4adc704 (opens in a new tab)x_refsource_MISC
- https://github.com/silverstripe/silverstripe-mfa/commit/04a102b662ac2f555acc26f8d2e2d8dab3937a6a (opens in a new tab)x_refsource_MISC
- https://github.com/silverstripe/silverstripe-mfa/releases/tag/6.0.0 (opens in a new tab)x_refsource_MISC
- https://www.silverstripe.org/download/security-releases/cve-2026-55186 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-68wq-phq7-p2vg (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-55186)Record last updated .