Improper Input Validation in NPC-Worldwide npcpy Product
CVE-2026-122015

5.3MEDIUM

Key Information:

Vendor

Npc-worldwide

Status
Npcpy
Vendor
CVE Published:
4 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-122015?

The NPC-Worldwide npcpy software, specifically within the MLX Provider component, contains an improper input validation vulnerability in the get_mlx_response function. This flaw allows attackers to manipulate the argument model, potentially leading to unauthorized access or further exploitation. The vulnerability is remotely exploitable, making it critical for users to take immediate action to patch affected versions, as exploit techniques are publicly accessible.

Affected Version(s)

npcpy 2.1.0

npcpy 2.1.1

npcpy 2.1.2

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-2026-122015 - Proof of Concept

References

https://vuldb.com/vuln/431083
vdb-entrytechnical-description
https://vuldb.com/vuln/431083/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-122015
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:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dem000000 (VulDB User)
.