VestaCP < 0.9.8-25 - Stored Cross-Site Scripting | Advisories

Advisories

VestaCP < 0.9.8-25 - Stored Cross-Site Scripting

severity: medium
date: January 21, 2026
Affecting: VestaCP <= 0.9.8-25
CVE: CVE-2021-47873
CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS: 5.1
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
References: ExploitDB-49662
VestaCP Official Vendor Homepage
VestaCP Alternative Download Site
Credit: Numan Türle
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.