Track vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
5.3

TDuck Survey Form lets logged‑in users submit unlimited entries

CVE-2026-100305 · published 1 month ago
Summary

The TDuck Survey Form version 6.0 and earlier does not stop a signed‑in user who knows a form's identifier from sending any number of responses. This ignores the form's publishing status, time limits, response caps, and per‑IP rules, allowing the results to be falsified. Apply the vendor's update or recommended configuration fix and check recent survey data for abnormal submission patterns.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
tduckcloud tduck-survey-form <= 6.0
Original advisory text
TDuck survey form through 6.0 Fill-In Restriction Bypass via Authenticated Submission Endpoint
TDuck survey form through 6.0 fails to enforce form fill-in restrictions on the authenticated submission endpoint POST /user/form/data/create. Authenticated attackers who know a form's key can submit unlimited entries to any form, bypassing publish status, time window, quota, and per-IP restrictions to falsify collected results.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.3 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-862Missing Authorization
Timeline
Published25 Sep 2026
Updated4 Nov 2026
First seen25 Sep 2026
Sources
CVE-2026-100305 · NVD
CVE-2026-100305 · MITRE
Track software like this
Free during beta