CVE-2026-100304
MediumCVSS 5.3Summary
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.
Risk Assessment
Unauthorized access to personal data from deleted forms can lead to privacy breaches and regulatory non-compliance (e.g., GDPR). Disclosure of this information may result in legal and reputational consequences.
Recommendation
Update TDuck to a version later than 6.0 if available, or fix the FormAuthUtils.hasPermission logic to default to deny. Consider auditing existing data and implementing additional access controls.
Other vulnerabilities in TDuck
See all- CVE-2026-100305Medium
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.
- 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 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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS