CVE-2021-47917
6.4 · MEDIUMOverview
CVE-2021-47917 is a medium-severity vulnerability affecting simplephpscripts simple_cms_php. It was published on February 1, 2026 and has a CVSS 3.1 base score of 6.4 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from simplephpscripts. Update simple_cms_php to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2021-47917?
CVE-2021-47917 is a medium-severity vulnerability affecting simplephpscripts simple_cms_php. It was published on February 1, 2026 and has a CVSS 3.1 base score of 6.4 (MEDIUM).
How severe is CVE-2021-47917?
This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-47917?
Check the references section for vendor advisories and patches from simplephpscripts. Update simple_cms_php to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-47917?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-47917 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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