CyberRota Analysis
AI-GeneratedThe MyBB forum software prior to version 1.8.40 contains a vulnerability in the User CP Buddy/Ignore List component that allows improper handling of reciprocal buddy-list updates. This flaw can lead to unintended modifications of a user's buddy list, potentially impacting user relationships and privacy. Organizations using affected versions of MyBB should prioritize upgrading to version 1.8.40 to mitigate this risk.
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 User CP Buddy/Ignore List component does not validate reciprocal buddy-list updates correctly. The usercp.php?action=do_editlists delete handler removes the selected entry from the acting user's list and then updates mybb_users.buddylist for the target account. The reciprocal update searches for the deleted target UID instead of the acting user's UID and uses the unchecked array_search() return value as an array key. A false result can be converted to index 0, removing the target account's first stored buddy while leaving the actual reciprocal entry unchanged. The uniquely identifying implementation details include false converted to index 0. This issue is fixed in version 1.8.40.