CyberRota Analysis
AI-GeneratedThe MyBB forum software prior to version 1.8.40 is vulnerable due to improper validation of redirect URLs in the Contact module, leading to open redirects and potential reflected JavaScript code injection. This flaw allows attackers to execute malicious scripts when users click on compromised links, posing a significant risk to user security and data integrity. Organizations using affected versions of MyBB should prioritize upgrading to version 1.8.40 or later to mitigate this critical vulnerability.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
MyBB is free and open source forum software. Prior to 1.8.40, the Contact module does not validate a redirect URL or protocol correctly, resulting in an open redirect and reflected JavaScript code injection. contact.php accepts the redirect target from the from HTTP parameter in $mybb->input['from'] or the Referer HTTP header in $_SERVER['HTTP_REFERER'] and passes it to redirect() without sufficient verification. A javascript: URI becomes the target of the `Click here if you don't want to wait any longer` link because $force_redirect is true, allowing script execution when a victim selects the link. This issue is fixed in version 1.8.40.