High severity · published Jan 21, 2026
CVE-2021-47873
VestaCP < 0.9.8-25 - Stored Cross-Site Scripting
7.2
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VE
VestaCP · VestaCP
0.9.8 through 0.9.8-25 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-47873
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-47873
myvestacp.com
https://myvestacp.com
vestacp.com
https://vestacp.com
www.exploit-db.com
https://www.exploit-db.com/exploits/49662
www.vulncheck.com
https://www.vulncheck.com/advisories/vestacp-stored-cross-site-scripting
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CVE-2020-36948
VestaCP 0.9.8-26 - 'LoginAs' Insufficient Session Validation