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TI-2026-84794 Aliases CVE-2026-55186GHSA-68wq-phq7-p2vg

Silverstripe MFA lets attackers bypass MFA during password reset

Priority LOW 19CWE-288Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-288.

Summary

Silverstripe MFA, the multi-factor authentication module for Silverstripe CMS, is affected before 6.0.0 in the CMS 5 line. The password reset flow can issue a logged-in session after a user changes a password but before the configured multi-factor challenge is completed, which skips the second factor. An attacker who controls the user's email account can follow the reset flow to bypass the additional authentication factor. CMS 6 is not affected.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00278 20th percentileScored 2026-11-07
Fix Fixed silverstripe-mfa (silverstripe): 6.0.0silverstripe/mfa (Packagist): 6.0.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
silverstripesilverstripe-mfabefore 6.0.06.0.0Patch availableCNA
—silverstripe/mfa (Packagist)before 6.0.06.0.0Patch availableGHSA-68wq-phq7-p2vg
  • silverstripe-mfa Vendorsilverstripe Affected before 6.0.0 Fixed in 6.0.0 Patch available CNA
  • silverstripe/mfa (Packagist) Vendor— Affected before 6.0.0 Fixed in 6.0.0 Patch available GHSA-68wq-phq7-p2vg

Remediation

Update silverstripe/mfa (silverstripe-mfa) to version 6.0.0, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA silverstripe-mfa (silverstripe) Fixed in 6.0.0
  • Fix · GHSA-68wq-phq7-p2vg silverstripe/mfa (Packagist) Fixed in 6.0.0 Advisory →

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-55186
  2. 2026-11-03 Alias added: GHSA-68wq-phq7-p2vg
  3. 2026-11-03 1 new reference · GHSA-68wq-phq7-p2vg
  4. 2026-11-03 CISA SSVC decision points changed

References

Other 9

  • TI-2007-02239 Unspecified vulnerability in the search functionality in SilverStripe 2.0.0 has unknown impact and attack vectors. CVSS 2.0HIGH 10.0
  • TI-2019-09110 In SilverStripe through 4.3.3, a missing warning about leaving install.php in a public… CVSS 3.1CRITICAL 9.8
  • TI-2019-09070 SQL injection vulnerability in silverstripe/restfulserver module 1.0.x before 1.0.9… CVSS 3.0CRITICAL 9.8
  • TI-2019-04049 All versions of SilverStripe 3 prior to 3.6.7 and 3.7.3, and all versions of SilverStripe… CVSS 3.0CRITICAL 9.8
  • TI-2022-17852 Silverstripe silverstripe/framework through 4.11 allows SQL Injection. CVSS 3.1HIGH 8.8
  • TI-2020-07444 Silverstripe CMS through 4.5 can be susceptible to script execution from malicious upload… CVSS 3.1HIGH 8.8
See all 97 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences