CVE-2021-47860 GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCE
Unauthenticated attackers can exploit CSRF to inject XSS, leading to remote code execution on the server when an administrator visits a malicious page.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47860?
CVE-2021-47860 is a high-severity vulnerability in GetSimple CMS Custom JS Plugin, published on 21 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-352
Which versions are affected by CVE-2021-47860?
It affects 1 product.
Products include Get-Simple Getsimplecms.
How do I fix CVE-2021-47860?
No fix has been published for CVE-2021-47860 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-47860 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47860 exists.
Other vulnerabilities in GetSimple CMS Custom JS Plugin
Sources
Also known as GHSA-vhhc-pp7m-qvpp.