CVE-2026-111621

TDuck Survey Form through 5.3 contains a missing authorization vulnerability that allows any authenticated user to read other owners' raw form settings via GET /user/form/setting/{key}. Attackers can supply the 8-character form key from a public fill link to obtain the form write password, owner notification e-mail, and WeChat openIds.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/TDuckCloud/tduck-survey-form
https://github.com/TDuckCloud/tduck-survey-form/blob/5.3/tduck-api/src/main/java/com/tduck/cloud/api/web/controller/UserFormSettingController.java#L66-L75
https://github.com/TDuckCloud/tduck-survey-form/commit/984efd69f51778e3d1a9ea0feb0f7c9aed266c18
https://hackmd.io/@hieuPenguinnn/tduck-survey-form-setting-cross-user-disclosure
https://www.vulncheck.com/advisories/tduck-survey-form-through-5.3-missing-authorization-via-user-form-setting-key

Configurations

No configuration.

History

16 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-16 18:17

Updated : 2026-10-16 22:17

NVD link : CVE-2026-111621

Mitre link : CVE-2026-111621

CVE.ORG link : CVE-2026-111621

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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