Cross Site Scripting Vulnerability in YzmCMS by YzmCMS
CVE-2026-15202

5.3MEDIUM

Key Information:

Vendor

YzmCMS

Status
Yzmcms
Vendor
CVE Published:
9 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15202?

A security flaw has been identified in the YzmCMS component 'Header Handler' in versions up to 7.5, specifically within the get_url function located in the yzmphp.php file. This vulnerability arises from improper validation of the HTTP_HOST argument, allowing attackers to perform cross-site scripting (XSS). This can enable unauthorized remote exploitation, potentially leading to the theft of sensitive information or session hijacking. Despite early notification to the vendor regarding this security issue, no response has been received.

Affected Version(s)

YzmCMS 7.0

YzmCMS 7.1

YzmCMS 7.2

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-2026-15202 - Proof of Concept

References

https://vuldb.com/vuln/377124
vdb-entrytechnical-description
https://vuldb.com/vuln/377124/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15202
third-party-advisory

CVSS V4

Score:
5.3
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

weng (VulDB User)
VulDB CNA Team
.