Missing Authentication Vulnerability in ZongXR SuperMarket Product
CVE-2026-103539

5.3MEDIUM

Key Information:

Vendor

Zongxr

Status
Supermarket
Vendor
CVE Published:
1 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-103539?

A vulnerability has been identified in the ZongXR SuperMarket version 1.0.0.0, specifically within the Instant Buy component. This weakness allows for a manipulation of the 'Username' argument during the execution of the 'startBuy' function located in the InstantBuyController.java file. As a result, it leads to inadequate authentication checks, potentially allowing unauthorized access and exploitation from remote locations. Despite early notification to the project team via an issue report, there has been no response or mitigation efforts to address this security flaw.

Affected Version(s)

SuperMarket 1.0.0.0

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-2026-103539 - Proof of Concept

References

https://vuldb.com/vuln/412349
vdb-entrytechnical-description
https://vuldb.com/vuln/412349/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-103539
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

360alphalab (VulDB User)
VulDB CNA Team
.