Cross Site Scripting Vulnerability in Vvveb by Givanz
CVE-2025-8521

4.8MEDIUM

Key Information:

Vendor

Givanz

Status
Vvveb
Vendor
CVE Published:
4 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8521?

A cross site scripting (XSS) vulnerability has been identified in Vvveb by Givanz, specifically in versions up to 1.0.5. The issue arises from an improper handling of requests made to the file /vadmin123/index.php?module=settings/post-types within the Add Type Handler component. An attacker could exploit this flaw to inject malicious scripts into web pages viewed by other users, potentially leading to unauthorized access and data compromise. Remote attackers can initiate this exploit, making it essential for users to upgrade to version 1.0.6 where the vulnerability has been addressed. The patch identifier for this upgrade is b53c7161da606f512b7efcb392d6ffc708688d49.

Affected Version(s)

Vvveb 1.0.0

Vvveb 1.0.1

Vvveb 1.0.2

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-2025-8521 - Proof of Concept

References

https://vuldb.com/?id.318647
vdb-entry
https://vuldb.com/?ctiid.318647
signaturepermissions-required
https://vuldb.com/?submit.625003
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
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

0xHamy (VulDB User)
JSON
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