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Vulnerabilities CVE-2026-45124

CVE-2026-45124

Medium
Open
TLP:CLEAR

MyBB: Mod CP report resolution missing authorization

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Description

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.

Details

CVSS Score
4.3
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Confidence
90%
Published
Aug 18, 2026
Last Modified
Aug 18, 2026
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