CVE-2021-47860

low-risk
Published 2026-01-21

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.

Do I need to act?

-
0.09% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Get-Simple

References (6)

Product http://get-simple.info
Product https://github.com/GetSimpleCMS/GetSimpleCMS
Exploit https://github.com/boku7/gsCMS-CustomJS-Csrf2Xss2Rce
Exploit https://www.exploit-db.com/exploits/49712
Exploit https://www.exploit-db.com/exploits/49816
Third Party Advisory https://www.vulncheck.com/advisories/getsimple-cms-custom-js-csrf-to-xss-to-rce
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal