Insecure Direct Object Reference Vulnerability in TDuck Survey Form by TDuckCloud
CVE-2026-109164

7.1HIGH

Key Information:

Vendor

Tduckcloud

Status
Tduck-survey-form
Vendor
CVE Published:
12 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-109164?

The TDuck survey form, version 6.0 and earlier, is susceptible to an insecure direct object reference vulnerability. This flaw allows authenticated users to manipulate form submission deletion by providing arbitrary submission IDs. By crafting requests with a valid formKey and sequentially iterating through submission IDs, attackers can delete other users' submissions, leading to unauthorized data loss across the platform. Such vulnerabilities highlight critical weaknesses in access control mechanisms and require immediate remediation to prevent exploitation.

Affected Version(s)

tduck-survey-form 0 <= 6.0

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-2026-109164 - Proof of Concept

References

https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1...
exploit
https://github.com/TDuckCloud/tduck-survey-form/blob/43ff...
technical-description
https://github.com/TDuckCloud/tduck-survey-form/blob/43ff...
technical-description

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
Low
Availability:
High
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

Yaqi Chao
.