Quick answers
- Is CVE-2026-111368 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-111368 being exploited in the wild.
- How severe is CVE-2026-111368?
- Medium severity, with a CVSS score of 6.4, published 15 October 2026.
- Which products and versions are affected?
- Classroomio through 1.0.0.
- Is there a fix for CVE-2026-111368?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-111368 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-111368?
- Check whether you run Classroomio at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An insecure direct object reference (IDOR) vulnerability exists in the Hono API course submission routes (PUT and DELETE handlers for /:submissionId endpoints). The vulnerability occurs because the courseTeamMemberMiddleware validates that the user is a team member of *some* course, but the update and delete service functions do not verify that the submission being modified belongs to the course the user is actually authorized for. An authenticated attacker (course tutor or admin) can craft requests with a submission UUID from another course to overwrite answers, grades, feedback, and grading status, or delete submissions entirely.
Affected products
- ClassroomIO ClassroomIO through 1.0.0
Timeline
- 2026-10-15: disclosed