SQL Injection Vulnerability in DefaultFuction CRM by DefaultFuction
CVE-2026-86172

5.3MEDIUM

Key Information:

Vendor

Defaultfuction

Status
Crm
Vendor
CVE Published:
6 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-86172?

A vulnerability exists in DefaultFuction CRM version 1.0.0 that allows an attacker to exploit the 'delete.php' file located in the '/modules/customers/' directory. This is accomplished by manipulating the argument ID, enabling the remote execution of SQL injection attacks. With the exploit now public, there is an increased risk for data integrity and security breaches, highlighting the importance of immediate attention for users of this CRM software.

Affected Version(s)

CRM 1.0.0

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-2026-86172 - Proof of Concept

References

https://vuldb.com/vuln/399310
vdb-entrytechnical-description
https://vuldb.com/vuln/399310/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-86172
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

Zhangao (VulDB User)
.