CVE-2026-111368 ClassroomIO through 1.0.0 IDOR via Course Submission Update, Grade and Delete Routes
Attackers can modify or delete course submissions in other courses by manipulating course IDs, leading to unauthorized data changes.
- 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-2026-111368?
CVE-2026-111368 is a medium-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 insecure direct object reference vulnerability in the Hono API course submission routes that allows course tutors or admins to modify submissions in other courses. Attackers can supply their own course id with another course's submission UUID to PUT or DELETE handlers to overwrite answers, grades, feedback, and grading status or delete submissions.
Weakness: CWE-639
Which versions are affected by CVE-2026-111368?
How do I fix CVE-2026-111368?
No fix has been published for CVE-2026-111368 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-2026-111368 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111368 exists.
Sources
Also known as GHSA-j6jm-jc5p-v7pp.