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CVE-2026-109164— TDuck survey form through 6.0 Authorization Bypass via User-Controlled Submission IDs in POST /user/form/data/delete/{formKey}

Quick assessment

Affected
TDuckCloud tduck-survey-form
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TDuck 调查表单系统（版本 6.0 及以下）存在不安全的直接对象引用（IDOR）漏洞，攻击者可以通过提交任意的表单提交 ID，使已认证用户能够删除其他用户的表单提交记录。攻击者可以在请求路径中插入自己的 formKey，并在请求体中遍历顺序生成的提交 ID，从而在全平台范围内永久删除表单提交数据。

CVSS 7.1 · High

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
TDuckCloud tduck-survey-form ≤ 6.0 affected
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I. Basic Information for CVE-2026-109164

Vulnerability Information
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Vulnerability Title
TDuck survey form through 6.0 Authorization Bypass via User-Controlled Submission IDs in POST /user/form/data/delete/{formKey}
Source: CVE Program / CVE List V5
Vulnerability Description
TDuck survey form through 6.0 contains an insecure direct object reference vulnerability that allows authenticated users to delete other users' form submissions by supplying arbitrary submission ids. Attackers can place their own formKey in the path and iterate sequential submission ids in the request body to permanently delete submissions platform-wide.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TDuckCloud tduck-survey-form 0 ~ 6.0 -

II. Public POCs for CVE-2026-109164

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III. Intelligence Information for CVE-2026-109164

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Patches & Fixes for CVE-2026-109164 (1)

Vendor Advisories for CVE-2026-109164 (1)

Proof of Concept for CVE-2026-109164 (1)

Other References for CVE-2026-109164 (1)

Same Patch Batch · TDuckCloud · 2026-10-12 · 3 CVEs total

CVE-2026-109167 4.3 MEDIUM TDuck survey form through 6.0 Authorization Bypass via User-Controlled Theme ID in POST /u
CVE-2026-109165 4.3 MEDIUM TDuck survey form through 6.0 Authorization Bypass via User-Controlled Form Key in POST /u

IV. Related Vulnerabilities

Same product: tduck-survey-form
Same vendor: TDuckCloud
Same weakness: CWE-639

V. Comments for CVE-2026-109164

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