CVE-2026-111369 ClassroomIO through 1.0.0 Incorrect Authorization via Lesson Update and Delete Routes
Authenticated students can modify or delete lessons in any course due to missing authorization checks on lesson update and delete routes.
- 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-2026-111369?
CVE-2026-111369 is a high-severity missing authorization vulnerability in ClassroomIO, published on 15 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
ClassroomIO through 1.0.0 contains an incorrect authorization vulnerability in the PUT and DELETE /:lessonId lesson routes that allows any course member, including students, to modify lessons. Authenticated students can supply arbitrary lesson ids to change titles and stored HTML content or delete lessons in their course and in other courses and organizations.
Weakness: CWE-863
Which versions are affected by CVE-2026-111369?
How do I fix CVE-2026-111369?
No fix has been published for CVE-2026-111369 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-2026-111369 being exploited?
There is no known exploitation of CVE-2026-111369 in the wild and no public exploit code.
Sources
Also known as GHSA-qg24-w69h-hf3v.