medium4.3
CVE-2026-45124
MyBB is free and open source forum software.
Impact
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=do_reports Mark Selected as Read handler is reachable with canmodcp even without canmanagereportedcontent or canmanagereportedposts. When no forums are in scope, $flist_reports is empty and the UPDATE mybb_reportedcontent query executes without the expected permission-based limitation. This issue is fixed in version 1.8.40.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| MyBB | MyBB Is Free And Open Source Forum Software. | before 1.8.40 |
Versions were read from the advisory text. No structured product data has been published for this record yet.