Unrated severityNVD Advisory· Published Oct 15, 2021· Updated Mar 31, 2025
HAL <= 2.1.1 Authenticated Stored Cross-Site Scripting
CVE-2021-39345
Description
The HAL WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/wp-hal.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 2.1.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.
AI Insight
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Affected products
2- HAL/HALv5Range: 2.1.1
Patches
Vulnerability mechanics
References
3- github.com/BigTiger2020/word-press/blob/main/HAL.mdmitrex_refsource_MISC
- plugins.trac.wordpress.org/changesetmitrex_refsource_MISC
- www.wordfence.com/vulnerability-advisories/mitrex_refsource_MISC
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