The MyBB Cross-Poster WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/classes/MyBBXPSettings.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 1.0. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.
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Affected Vendors & Products
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History
Mon, 31 Mar 2025 18:15:00 +0000
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ssvc
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Status: PUBLISHED
Assigner: Wordfence
Published: 2021-10-15T12:15:41.796Z
Updated: 2025-03-31T17:59:47.215Z
Reserved: 2021-08-20T00:00:00.000Z
Link: CVE-2021-39338
Updated: 2024-08-04T02:06:42.384Z
Status : Modified
Published: 2021-10-15T13:15:07.893
Modified: 2024-11-21T06:19:16.340
Link: CVE-2021-39338
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