Cross Site Scripting Vulnerability in MyEMS Admin Backend
CVE-2026-15321

4.8MEDIUM

Key Information:

Vendor

MyEMS

Status
Myems
Vendor
CVE Published:
10 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15321?

A cross site scripting vulnerability exists in the MyEMS Admin Backend prior to version 6.5.0, specifically within the on_post function of the svg.py file. This vulnerability allows attackers to manipulate the 'data' argument in a manner that can execute malicious scripts remotely. Although a patch has been released and is available in version 6.5.0, the issue is still under review, highlighting the need for users to upgrade to safeguard their applications from potential exploitation.

Affected Version(s)

MyEMS 6.0

MyEMS 6.1

MyEMS 6.2

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-2026-15321 - Proof of Concept

References

https://vuldb.com/vuln/377263
vdb-entrytechnical-description
https://vuldb.com/vuln/377263/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15321
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

rekczh (VulDB User)
VulDB CNA Team
.