CVE-2021-47873 VestaCP < 0.9.8-25 - Stored Cross-Site Scripting
Attackers can inject malicious scripts via the IP interface configuration, potentially leading to code execution or account takeover in VestaCP.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47873?
CVE-2021-47873 is a medium-severity cross-site scripting vulnerability in VestaCP, published on 21 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
VestaCP versions prior to 0.9.8-25 contain a cross-site scripting vulnerability in the IP interface configuration that allows attackers to inject malicious scripts. Attackers can exploit the 'v_interface' parameter by sending a crafted POST request to the add/ip/ endpoint with a stored XSS payload.
Weakness: CWE-79
Which versions are affected by CVE-2021-47873?
How do I fix CVE-2021-47873?
No fix has been published for CVE-2021-47873 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-47873 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47873 exists.
Sources
Also known as GHSA-f955-hgxq-hv82.