Unrestricted File Upload Vulnerability in QueryMine sms Background Management Page
CVE-2026-6489

5.3MEDIUM

Key Information:

Vendor

Querymine

Status
Sms
Vendor
CVE Published:
17 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6489?

A security flaw has been identified in QueryMine sms, specifically affecting the admin/addteacher.php file within the Background Management Page component. The vulnerability allows attackers to manipulate the image argument, leading to unrestricted file uploads. This can be exploited remotely, posing a significant risk if left unaddressed. Despite notifying the vendor about this security issue, no response has been received, raising concerns about the application's future security measures.

Affected Version(s)

sms 7ab5a9ea196209611134525ffc18de25c57d9593

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-2026-6489 - Proof of Concept

References

https://vuldb.com/vuln/358033
vdb-entrytechnical-description
https://vuldb.com/vuln/358033/cti
signaturepermissions-required
https://vuldb.com/submit/786981
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
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

mofeifei (VulDB User)
VulDB CNA Team
.