Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-109165
TDuckCloud tduck-survey-form — TDuck survey form through 6.0 Authorization Bypass via User-Controlled Form Key in POST /user/form/item/batch/create
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N N L N 5.3 .0024 13.8 —
AFFECTED
Product Versions Fixed
tduck-survey-form unspecified —
TIMELINE
Oct 12 Reserved by VulnCheck
Oct 12 Published (CNA: VulnCheck)
Oct 14 EXPLOIT PUBLISHED — CVE-2026-109165 (TDuckCloud tduck-survey-form). Public exploit reference added.
Description
TDuck survey form through 6.0 contains a broken access control vulnerability that allows authenticated users to add fields to other users' forms via POST /user/form/item/batch/create. Attackers can submit an array whose first element references their own form and later elements reference a victim's formKey, injecting attacker-chosen fields onto the victim's public fill page.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| October 12, 2026 | Reserved | Reserved by VulnCheck |
| October 12, 2026 | Published | Published (CNA: VulnCheck) |
| October 14, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-109165 (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 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-109165 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 Monday, October 19, 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.
