CVE-2026-109564 LearnHouse before 1.4.0 Missing Authorization via Playground Duplicate Endpoint
Authenticated instructors can duplicate restricted or unpublished playgrounds, exposing private content and republishing it publicly.
- 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-2026-109564?
CVE-2026-109564 is a low-severity missing authorization vulnerability in LearnHouse, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
LearnHouse before 1.4.0 contains a missing authorization vulnerability in POST /api/v1/playgrounds/{uuid}/duplicate that skips the read-access and draft checks enforced by get_playground. Authenticated users with playground creation rights, such as Instructors, who know a RESTRICTED or unpublished playground UUID can copy its html_content and republish it publicly.
Weakness: CWE-862
Which versions are affected by CVE-2026-109564?
How do I fix CVE-2026-109564?
No fix has been published for CVE-2026-109564 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-2026-109564 being exploited?
There is no known exploitation of CVE-2026-109564 in the wild and no public exploit code.
Sources
Also known as GHSA-gcg2-9m45-j9r6.