CVE-2026-100305
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk17th percentile - higher than 17% of all known CVEs
Summary
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.
Risk Assessment
Survey data integrity can be compromised through mass submission of falsified responses, leading to incorrect conclusions and loss of trust in results. This may affect business decisions based on manipulated data.
Recommendation
Update TDuck to a version later than 6.0 if available, or implement additional server-side controls enforcing limits and publish status. Consider restricting access to the endpoint and monitoring for unusual submission patterns.
Other vulnerabilities in TDuck
See all- CVE-2026-109164High
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.
- CVE-2026-100304Medium
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.
- CVE-2026-100303Medium
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.
- CVE-2026-92602High
TDuck survey form through version 5.3 fails to validate webhook URLs or verify form ownership in WebhookConfigController. Authenticated attackers can attach webhooks to other users' forms and exfiltrate submissions to arbitrary external or internal addresses.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS