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Mybb Cross Poster Project

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1 CVE • 1 product

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Mybb Cross Poster
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1 CVE

CVEs (1)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
CVE-2021-39338
1Mybb Cross Poster Project
1Mybb Cross Poster
Jun 17, 2026
Oct 15, 2021
N/A· v4
4.8 MEDIUM· v3
2.1 LOW· v2
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 allowe...Show more
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.Show less