CVE-2026-111621 TDuck Survey Form through 5.3 Missing Authorization via /user/form/setting/{key}
Authenticated users can read other owners' form settings, including passwords and emails, by accessing a specific endpoint with a public form key.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-111621?
CVE-2026-111621 is a medium-severity missing authorization vulnerability in TDuckCloud tduck-survey-form, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-639
Which versions are affected by CVE-2026-111621?
How do I fix CVE-2026-111621?
No fix has been published for CVE-2026-111621 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-111621 being exploited?
There is no known exploitation of CVE-2026-111621 in the wild and no public exploit code.
Sources
Also known as GHSA-7p6v-mhj8-c3pr.