Cross-Site Scripting Vulnerability in VestaCP by VestaCP
CVE-2021-47873

5.1MEDIUM

Key Information:

Vendor

Vestacp

Status
Vestacp
Vendor
CVE Published:
21 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47873?

VestaCP versions before 0.9.8-25 are prone to a cross-site scripting vulnerability that impacts the IP interface configuration. Attackers may exploit this vulnerability by crafting a malicious POST request to the add/ip/ endpoint with a specific stored XSS payload targeting the 'v_interface' parameter, allowing them to inject and execute harmful scripts within the web application.

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Affected Version(s)

VestaCP 0.9.8 <= 0.9.8-25

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47873 - Proof of Concept

References

https://www.exploit-db.com/exploits/49662
exploit
https://vestacp.com
product
https://myvestacp.com
product

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Numan Türle
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