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
Joomla! Core 3.9.x Cross-Site Request Forgery (3.9.0 - 3.9.22)
WordPress Plugin Contact Form by Supsystic Multiple Vulnerabilities (1.7.5)
Magento Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2015-8707)
MySQL CVE-2020-14576 Vulnerability (CVE-2020-14576)
MediaWiki Insufficiently Protected Credentials Vulnerability (CVE-2020-35623)