Threats affecting pkg:github/tduck-survey-form

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.

CVE-2026-109167 is an insecure direct object reference vulnerability in TDuckCloud's tduck-survey-form version 6.0 and earlier. It allows authenticated users to overwrite other users' form themes by submitting another form's sequential theme ID with their own form key. This results in unauthorized modification of colors and image URLs of the victim's form theme.

TDuckCloud tduck-survey-form versions up to 6.0 have a broken access control vulnerability allowing authenticated users to add fields to other users' survey forms via a specific POST request. This enables attackers to inject arbitrary fields onto a victim's public survey fill page by manipulating the formKey parameter in the request.

TDuckCloud tduck-survey-form versions up to 6.0 contain an insecure direct object reference vulnerability that allows authenticated users to delete other users' form submissions by manipulating submission IDs. Attackers can supply arbitrary submission IDs and their own formKey to delete submissions across the platform.

TDuck survey form through 6.0 fails to validate write passwords on submission endpoints, enforcing the check only on the front end. Remote unauthenticated attackers can submit form entries directly to public submission APIs without providing the password by using the form key from share links.

TDuck survey form through 6.0 fails to enforce form fill-in restrictions on the authenticated submission endpoint POST /user/form/data/create. Authenticated attackers who know a form's key can submit unlimited entries to any form, bypassing publish status, time window, quota, and per-IP restrictions to falsify collected results.

TDuck survey form 6.0 contains an information disclosure vulnerability in FormAuthUtils.hasPermission that fails open when a form does not exist, allowing authenticated users to access deleted form submissions. Attackers can read orphaned submission data including personal information by providing a known dataId to the GET /user/form/data/details endpoint after the form has been permanently deleted.

TDuck survey form through 6.0 lacks authorization checks on FormThemeController write endpoints for global form themes and categories. Authenticated non-admin users can add, modify, or delete themes and theme categories affecting forms owned by other users.

TDuck survey form through version 5.3 fails to validate webhook URLs or verify form ownership in the WebhookConfigController. Authenticated attackers can attach webhooks to other users' forms and exfiltrate submissions to arbitrary external or internal addresses.