CVE-2026-100303

MEDIUM 5.4

TDuck survey form through 6.0 Missing Authorization in Form Theme Management Endpoints

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	tduckcloud
Product	tduck-survey-form
Published	Sep 25, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Affected Versions

TDuckCloud / tduck-survey-form

0 ≤ 6.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/LinYuanyi1/cve-request-poc/blob/adffc39b78cad18cd489cbf7454853bf0f744b7f/tduck/poc_form_theme_write.py github.com: https://github.com/TDuckCloud/tduck-survey-form github.com: https://github.com/TDuckCloud/tduck-survey-form/blob/43ffa9c993e38936fc4de7d8e5aee82bbaa19502/tduck-api/src/main/java/com/tduck/cloud/api/web/controller/FormThemeController.java#L61-L120 vulncheck.com: https://www.vulncheck.com/advisories/tduck-survey-form-through-6.0-missing-authorization-in-form-theme-management-endpoints

Credits

Yaqi Chao Mingsheng Lin