Cross Site Scripting Vulnerability in Wavlink WL-WN578W2 Products
CVE-2026-4544

4.8MEDIUM

Key Information:

Vendor

Wavlink

Status
Wl-wn578w2
Vendor
CVE Published:
22 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4544?

A vulnerability exists in the Wavlink WL-WN578W2 device, specifically within the POST Request Handler component located at /cgi-bin/login.cgi. This issue arises from improper handling of user input in the homepage/hostname/login_page arguments. An attacker can exploit this flaw to execute cross site scripting (XSS) attacks remotely, potentially compromising user sessions or manipulating website content. Although the vulnerability was disclosed publicly, the vendor has not responded to notifications regarding this security issue.

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Affected Version(s)

WL-WN578W2 221110

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-2026-4544 - Proof of Concept

References

https://vuldb.com/?id.352361
vdb-entrytechnical-description
https://vuldb.com/?ctiid.352361
signaturepermissions-required
https://vuldb.com/?submit.774692
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

LtzHuster (VulDB User)
VulDB
JSON
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