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. Authenticated users can exploit this flaw by supplying arbitrary submission IDs and a user-controlled formKey to delete other users' form submissions. This vulnerability allows attackers to iterate through submission IDs and permanently delete submissions across the platform without proper authorization.
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.
A vulnerability was identified in TDuckCloud tduck-platform up to 5.3. This vulnerability affects the function PaginationInnerInterceptor.concatOrderBy of the file tduck-api/src/main/java/com/tduck/cloud/api/config/MybatisPlusConfig.java of the component Pagination Inner Interceptor. The manipulation of the argument orders[0].column leads to sql injection. The attack can be initiated remotely. The exploit is publicly available and might be used. The identifier of the patch is ea7f0fae7cb0fd998a3284c11addce689350cd69. It is suggested to install a patch to address this issue.
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.
TDuck survey form through version 5.0 contains an authorization bypass vulnerability in the POST /user/form/data/update endpoint that allows authenticated users to overwrite other users' form submission data. Attackers can discover submission identifiers allocated in narrow ranges and modify arbitrary form responses containing personal data by sending update requests without ownership validation.
A vulnerability has been found in TDuckCloud tduck-platform up to 5.1 and classified as critical. Affected by this vulnerability is the function preHandle of the file /manage/ of the component com.tduck.cloud.api.web.interceptor.AuthorizationInterceptor. The manipulation leads to improper authorization. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
A vulnerability was found in TDuckCloud tduck-platform 5.1 and classified as critical. This issue affects the function UserFormDataMapper of the file src/main/java/com/tduck/cloud/form/mapper/UserFormDataMapper.java. The manipulation of the argument formKey leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.