TDuck survey form through 6.0 Write Password Bypass via Client-Side Enforcement
Priority HIGH 70CWE-602Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00388 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| TDuckCloud | tduck-survey-form | up to 6.0 | — | No fix listed | CNA |
- tduck-survey-form VendorTDuckCloud Affected up to 6.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-100306
- 2026-10-03 Alias added: GHSA-5966-7cgr-qvf4
References
Other 3
- https://github.com/TDuckCloud/tduck-survey-form
- https://github.com/TDuckCloud/tduck-survey-form/blob/43ffa9c993e38936fc4de7d8e5aee82bbaa19502/tduck-api/src/main/java/com/tduck/cloud/api/web/controller/UserFormSettingController.java#L154-L162
- https://github.com/TDuckCloud/tduck-survey-form/blob/43ffa9c993e38936fc4de7d8e5aee82bbaa19502/tduck-api/src/main/java/com/tduck/cloud/api/web/controller/UserFormResultController.java#L152-L172
More TDuckCloud vulnerabilities
- TI-2025-35590 SQL Injection vulnerability in TDuckCloud v.5.1 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
- TI-2024-08062 TDuckCloud TDuckPro password recovery CVSS 4.0MEDIUM 6.9
- TI-2023-28429 SQL Injection vulnerability in TDuckCLoud tduck-platform v.4.0 allows a remote attacker… CVSS 3.1HIGH 8.1
- TI-2026-70949 Authorization bypass in TDuck survey form allows submission deletion CVSS 4.0HIGH 7.1
- TI-2026-62458 TDuck survey form through 5.3 Server-Side Request Forgery via Unvalidated Webhook URL CVSS 4.0HIGH 7.1
- TI-2026-64636 TDuck survey form 6.0 Information Disclosure via Fail-Open Form Ownership Check CVSS 4.0MEDIUM 6.0
Sources
- CVE-2026-100306 · CVE Program
- CVE-2026-100306 · NVD
- FIRST EPSS
- GHSA-5966-7cgr-qvf4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences