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Description

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.

PUBLISHED Reserved 2026-01-18 | Published 2026-01-21 | Updated 2026-01-22 | Assigner VulnCheck




HIGH: 8.5CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

Cross-Site Request Forgery (CSRF)

Product status

0.1
affected

Credits

Bobby Cooke (boku) & Abhishek Joshi finder

References

www.exploit-db.com/exploits/49816 (ExploitDB-49816) exploit

get-simple.info (Vendor Homepage) product

github.com/GetSimpleCMS/GetSimpleCMS (GetSimple CMS GitHub Repository) product

github.com/boku7/gsCMS-CustomJS-Csrf2Xss2Rce (Researcher Disclosure) technical-description exploit

www.exploit-db.com/exploits/49712 (ExploitDB-49712) exploit

www.vulncheck.com/...simple-cms-custom-js-csrf-to-xss-to-rce (VulnCheck Advisory: GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCE) third-party-advisory

cve.org (CVE-2021-47860)

nvd.nist.gov (CVE-2021-47860)

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