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
PHP Improper Link Resolution Before File Access ('Link Following') Vulnerability (CVE-2007-4652)
WeBid Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2011-3815)
WordPress Plugin Simple Ads Manager Multiple Vulnerabilities (2.6.96)