Medium severity5.5NVD Advisory· Published Oct 19, 2021· Updated Jun 17, 2026
CVE-2021-39343
CVE-2021-39343
Description
The MPL-Publisher WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/libs/PublisherController.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 1.30.2. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:mpl-publisher:mpl-publisher:*:*:*:*:*:wordpress:*:*+ 1 more
- cpe:2.3:a:mpl-publisher:mpl-publisher:*:*:*:*:*:wordpress:*:*range: <=1.30.2
- (no CPE)range: 1.30.2
- Range: <=1.30.2
Patches
Vulnerability mechanics
References
3- github.com/BigTiger2020/word-press/blob/main/MPL-Publisher.mdnvdExploitThird Party Advisory
- plugins.trac.wordpress.org/browser/mpl-publisher/trunk/libs/PublisherController.phpnvdExploitThird Party Advisory
- www.wordfence.com/vulnerability-advisories/nvdThird Party Advisory
News mentions
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