The GraphQL module accepts basic-auth as an authentication method by default. This can be used to bypass MFA authentication if the silverstripe/mfa module is installed, which is now a commonly installed module. A users password is still required though.

Basic-auth has been removed as a default authentication method. If desired, it can be re-enabled by adding it to the authenticators key of a schema, or on SilverStripe\Graphql\Auth\Handler

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-26136
• https://forum.silverstripe.org/c/releases
• https://www.silverstripe.org/blog/tag/release
• https://www.silverstripe.org/download/security-releases/
• https://www.silverstripe.org/download/security-releases/cve-2020-26136
• https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/graphql/CVE-2020-26136.yaml