Description
Under certain circumstances, the Drupal core form API evaluates form element access incorrectly. This may lead to a user being able to alter data they should not have access to. No forms provided by Drupal core are known to be vulnerable. However, forms added through contributed or custom modules or themes may be affected.
Remediation
References
Related Vulnerabilities
PHP Out-of-bounds Read Vulnerability (CVE-2019-19246)
Joomla CVE-2017-7988 Vulnerability (CVE-2017-7988)
OpenSSL Missing Encryption of Sensitive Data Vulnerability (CVE-2019-1547)
WordPress Plugin freetobook widget Unspecified Vulnerability (1.0.5)
Moodle Insufficient Verification of Data Authenticity Vulnerability (CVE-2020-1755)