Medium severity6.4NVD Advisory· Published Oct 15, 2026
CVE-2026-111368
CVE-2026-111368
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.
Affected products
1- Range: <=1.0.0
Patches
Vulnerability mechanics
References
5- github.com/classroomio/classroomio/blob/v1.0.0/apps/api/src/routes/course/submission.tsnvd
- github.com/classroomio/classroomio/blob/v1.0.0/packages/db/src/queries/submission/submission.tsnvd
- github.com/classroomio/classroomio/commit/1844ad9671a0d9c2566d3431d82f34d39016242cnvd
- hackmd.io/@hieuPenguinnn/classroomio-course-resource-id-scoping-idornvd
- www.vulncheck.com/advisories/classroomio-through-1.0.0-idor-via-course-submission-update-grade-and-delete-routesnvd
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