Unrated severityNVD Advisory· Published Feb 1, 2026· Updated Mar 5, 2026
Simple CMS 2.1 Persistent Cross-Site Scripting via User Input Parameters
CVE-2021-47917
Description
Simple CMS 2.1 contains a persistent cross-site scripting vulnerability in user input parameters that allows remote attackers to inject malicious script code. Attackers can exploit the newUser and editUser modules to inject persistent scripts that execute on user list preview, potentially leading to session hijacking and application manipulation.
Affected products
2- Range: = 2.1
- Simplephpscripts/Simple CMSv5Range: 2.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- www.vulnerability-lab.com/get_content.phpmitreexploit
- www.vulncheck.com/advisories/simple-cms-persistent-cross-site-scripting-via-user-input-parametersmitrethird-party-advisory
- simplephpscripts.com/simple-cms-phpmitreproduct
News mentions
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