CVE-2026-111368
CVE-2026-111368 · ClassroomIO through 1.0.0 IDOR via Course Submission Update, Grade and Delete Routes
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.1 · Medium · EPSS 0.3%
- Published
- Updated
Affected products and versions
classroomio
- Versions
- ≥ 0, ≤ 1.0.0: Affected (semver)
No fix published
Original sources
- https://hackmd.io/@hieuPenguinnn/classroomio-course-resource-id-scoping-idor
- https://github.com/classroomio/classroomio/blob/v1.0.0/apps/api/src/routes/course/submission.ts
- https://github.com/classroomio/classroomio/blob/v1.0.0/packages/db/src/queries/submission/submission.ts#L217-L245
- https://github.com/classroomio/classroomio/commit/1844ad9671a0d9c2566d3431d82f34d39016242c
- https://github.com/classroomio/classroomio
- https://www.vulncheck.com/advisories/classroomio-through-1.0.0-idor-via-course-submission-update-grade-and-delete-routes
- https://nvd.nist.gov/vuln/detail/CVE-2026-111368