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Low

Silverstripe Framework: Members with no password can be created and bypass custom login forms

  • Disclosed: 31.07.2023
  • Updated: 11.10.2026 10:22

When a new Member record was created in the cms it was possible to set a blank password. If an attacker knows the email address of the user with the blank password then they can attempt to log in using an empty password. The default member authenticator, login form and basic auth all require a non-empty password, however if a custom authentication method is used it may allow a successful login with the empty password. Starting with this release, blank passwords are no no longer allowed when members are created in the CMS. Programatically created Member records, such as those used in unit tests, still allow blank passwords. You may have some Member records in your system already which have empty passwords. To detect these, you can loop over all Member records with Member::get() and pass each record into the below method. It might be sensible to create a BuildTask for this purpose.

php
  private function memberHasBlankPassword(Member $member): bool
  {
      // skip default admin as this is created programatically
      if ($member->isDefaultAdmin()) {
          return false;
      }
      // return true if a blank password is valid for this member
      $authenticator = new MemberAuthenticator();
      return $authenticator->checkPassword($member, '')->isValid();
  }

Once you have identified the records with empty passwords, it's up to you how to handle this. The most sensible way to resolve this is probably to generate a new secure password for each of these members, mark it as immediately expired, and email each affected member (assuming they have a valid email address in the system).

Users would need to opt-in to insecure behavior by using a configuration which allowed for empty passwords. These configurations are not expected and hence this advisory is primarily informational in nature.

Reported by: Sabina Talipova from Silverstripe and Christian Bünte

Affected software

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PlatformPackageVulnerable versionsFixed in
Composer package silverstripe/framework >= 3.0.0, < 4.13.14, >= 5.0.0, < 5.0.13 4.13.14, 5.0.13

References

CVSS score 0
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:N
Weakness (CWE)
CWE-20, CWE-862
Platform
Composer
Package
silverstripe/framework
Disclosed
31.07.2023
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-36xx-7vf6-7mv3 - CC BY 4.0

Vulnerability history: silverstripe/framework

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (93) in the archive
Total entries
93
First → latest
11.2019 08.2026
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 13
  • Medium 69
  • Low 8

Disclosures per year

Severity:
  1. silverstripe/framework has potential SQL Injection vulnerability in PostgreSQL database connector
    High · 8.8 ghsa-265q-222x-52m6 >= 4.0.0-rc1, < 4.0.6, >= 4.1.0-rc1, < 4.1.4, >= 4.2.0-rc1, < 4.2.3 4.0.6, 4.1.4, 4.2.3
  2. silverstripe/framework has possible denial of service attack vector when flushing
    High · 7.5 ghsa-cwgq-83w5-8jfq >= 4.0.0-rc1, < 4.0.5, >= 4.1.0-rc1, < 4.1.3, >= 4.2.0-rc1, < 4.2.2 4.0.5, 4.1.3, 4.2.2
  3. silverstripe/framework allows upload of dangerous file types
    High · 8.8 ghsa-vcg6-8fxc-x5cq >= 3.6.5-rc1, < 3.6.6, >= 4.0.3-rc1, < 4.0.4, >= 4.1.0-rc1, < 4.1.1 3.6.6, 4.0.4, 4.1.1
  4. silverstripe/framework code execution vulnerability
    High · 7.5 ghsa-vgxh-x8jv-hmff >= 4.0.3-rc1, < 4.0.4, >= 4.1.0-rc1, < 4.1.1 4.0.4, 4.1.1
  5. silverstripe/framework BackURL validation bypass with malformed URLs
    High · 7.5 ghsa-m5q3-mvcr-gc5m >= 4.0.0-rc1, < 4.0.4, >= 4.1.0-rc1, < 4.1.1 4.0.4, 4.1.1
  6. silverstripe/framework SQL injection in full text search
    High · 8.8 ghsa-xx4r-5265-48j6 >= 3.5.0-rc1, < 3.5.6, >= 3.6.0-rc1, < 3.6.3, >= 4.0.0-rc1, < 4.0.1 3.5.6, 3.6.3, 4.0.1
  7. silverstripe/framework CSV Excel Macro Injection
    High · 8.0 ghsa-mqjc-x563-c9q8 >= 3.5.0-rc1, < 3.5.6, >= 3.6.0-rc1, < 3.6.3, >= 4.0.0-rc1, < 4.0.1 3.5.6, 3.6.3, 4.0.1
  8. silverstripe/framework vulnerable to user enumeration via timing attack on login and password reset forms
    High ghsa-7m2v-x7rg-5hm5 >= 3.5.0-rc1, < 3.5.5, >= 3.6.0-rc1, < 3.6.2 3.5.5, 3.6.2
  9. silverstripe/framework's User-Agent header not correctly invalidating user session
    High · 7.5 ghsa-4qx8-j9vh-2628 >= 3.5.0-rc1, < 3.5.6, >= 3.6.0-rc1, < 3.6.3 3.5.6, 3.6.3
  10. Silverstripe Brute force bypass on default admin
    Critical · 9.1 ghsa-8v6m-7f5v-hhx6 >= 3.1.18, < 3.1.19, >= 3.2.3, < 3.2.4, >= 3.3.1, < 3.3.2 3.1.19, 3.2.4, 3.3.2
  11. Silverstripe X-Forwarded-Host request hostname injection
    High · 7.2 ghsa-25gq-jvx2-vg9x >= 3.1.0, < 3.1.13 3.1.13
  12. Silverstripe Framework: Members with no password can be created and bypass custom login forms this entry
    Low · 0.0 CVE-2023-32302 >= 3.0.0, < 4.13.14, >= 5.0.0, < 5.0.13 4.13.14, 5.0.13
  13. Blind SQL Injection via GridFieldSortableHeader
    High · 8.8 CVE-2022-38148 >= 4.0.0, < 4.10.11, >= 4.11.0, < 4.11.14 4.10.11, 4.11.14
  14. Silverstripe CMS information disclosure
    High · 7.5 CVE-2020-6164 >= 4.0.0, < 4.4.7, >= 4.5.0, < 4.5.4 4.4.7, 4.5.4
  15. SilverStripe Folders migrated from 3.x may be unsafe to upload to
    High · 7.5 CVE-2020-9280 >= 4.0.0, < 4.4.6 4.4.6
  16. Silverstripe Framework SQLi Vulnerability
    Critical · 9.8 CVE-2019-5715 >= 3.0.0, < 3.6.7, >= 4.0.0, < 4.0.7, >= 3.7.0, < 3.7.3, >= 4.1.0, < 4.1.5, >= 4.2.0, < 4.2.4, >= 4.3.0, < 4.3.1 3.6.7, 4.0.7, 3.7.3, 4.1.5, 4.2.4, 4.3.1
  17. Missing warning can lead to unauthenticated admin access in SilverStripe
    Critical · 9.8 CVE-2019-12204 >= 4.1.0, < 4.3.5 4.3.5

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