CVE-2021-47860highCWE-352

CVE-2021-47860: high-severity vulnerability in GetSimple CMS Custom JS Plugin

GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCE

Published 21 Jan 2026 · Updated 07 Apr 2026

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.5epss 0.3%

GetSimple CMS Custom JS 0.1 plugin contains a cross-site request forgery vulnerability that allows unauthenticated attackers to inject arbitrary client-side code into administrator browsers. Attackers can craft a malicious website that triggers a cross-site scripting payload to execute remote code on the hosting server when an authenticated administrator visits the page.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Affected products

GetSimple CMS · Custom JS Plugin

References

http://get-simple.info https://github.com/boku7/gsCMS-CustomJS-Csrf2Xss2Rce https://github.com/GetSimpleCMS/GetSimpleCMS https://www.exploit-db.com/exploits/49712 https://www.exploit-db.com/exploits/49816 https://www.vulncheck.com/advisories/getsimple-cms-custom-js-csrf-to-xss-to-rce