CVE-2026-45129 MyBB: ACP Recovery Codes CSRF

MyBB is free and open source forum software. Prior to 1.8.40, the Admin CP Recovery Codes module does not validate requests correctly, allowing same-site attackers to rotate a victim administrator's recovery codes with a specially crafted URL. The Admin CP Home, Preferences, Recovery Codes...

CVE-2026-45124 MyBB: Mod CP report resolution missing authorization

MyBB is free and open source forum software. Prior to 1.8.40, the Mod CP Report Center does not check permissions consistently, allowing moderators without report-management permission to mark reports as resolved. The modcp.php?action=doreports Mark Selected as Read handler is reachable with...

CVE-2026-45124 MyBB: Mod CP report resolution missing authorization

MyBB is free and open source forum software. Prior to 1.8.40, the Mod CP Report Center does not check permissions consistently, allowing moderators without report-management permission to mark reports as resolved. The modcp.php?action=doreports Mark Selected as Read handler is reachable with...

CVE-2026-45124

MyBB (open-source forum software) prior to 1.8.40 contains an authorization flaw in the Mod CP Report Center . The modcp.php?action=do_reports "Mark Selected as Read" handler is reachable with only the canmodcp permission, even when the moderator lacks canmanagereportedcontent or canmanagereporte...

CVE-2026-45124 MyBB: Mod CP report resolution missing authorization

MyBB is free and open source forum software. Prior to 1.8.40, the Mod CP Report Center does not check permissions consistently, allowing moderators without report-management permission to mark reports as resolved. The modcp.php?action=doreports Mark Selected as Read handler is reachable with...

EUVD-2026-61018

MyBB is free and open source forum software. Prior to 1.8.40, the Mod CP Report Center does not check permissions consistently, allowing moderators without report-management permission to mark reports as resolved. The modcp.php?action=doreports Mark Selected as Read handler is reachable with...

CVE-2026-45124

MyBB is free and open source forum software. Prior to 1.8.40, the Mod CP Report Center does not check permissions consistently, allowing moderators without report-management permission to mark reports as resolved. The modcp.php?action=doreports Mark Selected as Read handler is reachable with...

CVE-2026-45120 MyBB: Insufficient authorization for private calendar events

MyBB is free and open source forum software. Prior to 1.8.40, the calendar module does not verify private event status consistently, allowing users with viewing and moderation permissions to access and moderate private events. The private-event check used by getevents in inc/functionscalendar.php...

EUVD-2026-61017

MyBB is free and open source forum software. Prior to 1.8.40, the calendar module does not verify private event status consistently, allowing users with viewing and moderation permissions to access and moderate private events. The private-event check used by getevents in inc/functionscalendar.php...

CVE-2026-45120

MyBB (free and open source forum software) versions prior to 1.8.40 contain an authorization flaw in the calendar module . The private-event check implemented in get_events() within inc/functions_calendar.php and the event action is missing from the remaining calendar.php actions. This allows use...

CVE-2026-45120

MyBB is free and open source forum software. Prior to 1.8.40, the calendar module does not verify private event status consistently, allowing users with viewing and moderation permissions to access and moderate private events. The private-event check used by getevents in inc/functionscalendar.php...

CVE-2026-45120 MyBB: Insufficient authorization for private calendar events

MyBB is free and open source forum software. Prior to 1.8.40, the calendar module does not verify private event status consistently, allowing users with viewing and moderation permissions to access and moderate private events. The private-event check used by getevents in inc/functionscalendar.php...

CVE-2026-47245 MyBB: Buddy list corruption

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=doeditlists delete handler removes the selected entry from the acting user's list and then updates...

CVE-2026-47245 MyBB: Buddy list corruption

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=doeditlists delete handler removes the selected entry from the acting user's list and then updates...

EUVD-2026-61016

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=doeditlists delete handler removes the selected entry from the acting user's list and then updates...

CVE-2026-47245

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=doeditlists delete handler removes the selected entry from the acting user's list and then updates...

CVE-2026-47245

In MyBB versions prior to 1.8.40, the usercp.php?action=do_editlists delete handler performs a reciprocal buddy-list update that searches for the target UID instead of the acting user's UID and uses the unchecked array_search() return value as an array key. When array_search() returns false, it i...

CVE-2026-47245 MyBB: Buddy list corruption

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=doeditlists delete handler removes the selected entry from the acting user's list and then updates...

CVE-2026-45734 MyBB: Default CAPTCHA missing invalidation

MyBB is free and open source forum software. Prior to 1.8.40, the built-in CAPTCHA does not consistently enforce single-use semantics, allowing remote attackers to bypass CAPTCHA controls through challenge replay. The successful validation paths in contact.php, member.php?action=doresendactivatio...

CVE-2026-45734

MyBB is free and open source forum software. Prior to 1.8.40, the built-in CAPTCHA does not consistently enforce single-use semantics, allowing remote attackers to bypass CAPTCHA controls through challenge replay. The successful validation paths in contact.php, member.php?action=doresendactivatio...