Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-100304

CVE-2026-100304MEDIUM

TDuckCloud tduck-survey-form — TDuck survey form 6.0 Information Disclosure via Fail-Open Form Ownership Check

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   P   L   N   H   N   N    6.0   .0035   26.5     —

AFFECTED
  Product            Versions  Fixed
  tduck-survey-form  6.0 –     —

TIMELINE
  Sep 25  Reserved by VulnCheck
  Sep 25  Published (CNA: VulnCheck)
  Sep 28  EXPLOIT PUBLISHED — CVE-2026-100304 (TDuckCloud tduck-survey-form). Public exploit reference added.

CWE-636 · CNA: VulnCheck · CVSS v4.0 · 6 references · NVD status: Deferred

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 25, 2026	Reserved	Reserved by VulnCheck
September 25, 2026	Published	Published (CNA: VulnCheck)
September 28, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-100304 (TDuckCloud tduck-survey-form). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
TDuckCloud	tduck-survey-form	—	6.0	—

Weaknesses

CWE-636

References (6)

Authoritative record: CVE-2026-100304 at cve.org

Vendors: tduckcloud

Weaknesses: CWE-636

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-100304 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.