Description
classes/GoogleSpell.php in the PHP Spellchecker (aka Google Spellchecker) addon before 2.0.6.1 for TinyMCE, as used in Moodle 2.1.x before 2.1.10, 2.2.x before 2.2.7, 2.3.x before 2.3.4, and 2.4.x before 2.4.1 and other products, does not properly handle control characters, which allows remote attackers to trigger arbitrary outbound HTTP requests via a crafted string.
Remediation
References
Related Vulnerabilities
WordPress Plugin MiwoFTP-File & Folder Manager Arbitrary File Download (1.0.5)
Python Improper Encoding or Escaping of Output Vulnerability (CVE-2020-26116)
Jboss EAP Permissions, Privileges, and Access Controls Vulnerability (CVE-2019-3894)
WordPress Plugin WP-Forum 'sendmail.php' SQL Injection (1.7.8)
WordPress Plugin Loan Comparison Multiple Cross-Site Scripting Vulnerabilities (1.5.2)