Remote Command Execution Vulnerability in Whyour Qinglong API Component
CVE-2026-3965

5.3MEDIUM

Key Information:

Vendor

Whyour

Status
Qinglong
Vendor
CVE Published:
11 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3965?

A security vulnerability has been identified in Whyour Qinglong's API, specifically in the file back/loaders/express.ts. This issue results from improper handling of the command argument, allowing remote attackers to exploit a deficiency in the protection mechanism. If successfully executed, this vulnerability can compromise the integrity of the affected system. A patch has been implemented in version 2.20.2 to remediate the issue. Users are highly encouraged to upgrade promptly to maintain secure operations.

Affected Version(s)

qinglong 2.20.0

qinglong 2.20.1

qinglong 2.20.2

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-2026-3965 - Proof of Concept

References

https://vuldb.com/?id.350394
vdb-entrytechnical-description
https://vuldb.com/?ctiid.350394
signaturepermissions-required
https://vuldb.com/?submit.768861
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

a7cc (VulDB User)
.