CVE-2026-45124

Published: Aug 18, 2026Modified: Sep 8, 2026Deferred

4.3

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Exploitability: 2.8 / Impact: 1.4

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-862

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

References (4)

https://github.com/mybb/mybb/commit/5cda5f6d183bc2cac24f0533e8d3060a9a46cc42

Source: security-advisories@github.com

https://github.com/mybb/mybb/releases/tag/mybb_1840

Source: security-advisories@github.com

https://github.com/mybb/mybb/security/advisories/GHSA-gfxj-g7w6-6w4v

Source: security-advisories@github.com

https://mybb.com/versions/1.8.40

Source: security-advisories@github.com

Timeline

No history available yet.