TI-2026-75407 Aliases CVE-2026-111621 GHSA-7p6v-mhj8-c3pr

Missing authorization in TDuck Survey Form exposes form settings

LOW 24CWE-639Published 2026-10-16 · Updated 2026-10-16

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

TDuck Survey Form through 5.3 from TDuckCloud has a missing authorization flaw (CWE-639) in its form settings endpoint. Any authenticated user with low privileges can read other owners' raw form settings, including the form write password, owner notification e-mail and WeChat openIds, by using the 8-character form key from a public fill link.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00251 16th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
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 5.3	—	No fix listed	CNA

tduck-survey-form VendorTDuckCloud Affected up to 5.3 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for TDuck Survey Form.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-16 Threatist record created from CVE-2026-111621
2026-10-16 Alias added: GHSA-7p6v-mhj8-c3pr
2026-10-18 CISA SSVC decision points changed

References

Patch 1

https://github.com/TDuckCloud/tduck-survey-form/commit/984efd69f51778e3d1a9ea0feb0f7c9aed266c18

Advisory 1

https://hackmd.io/@hieuPenguinnn/tduck-survey-form-setting-cross-user-disclosure

Other 2

TI-2025-35590 SQL Injection vulnerability in TDuckCloud v.5.1 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
TI-2026-64638 TDuck survey form through 6.0 Write Password Bypass via Client-Side Enforcement CVSS 4.0MEDIUM 6.9
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

See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences