HIGH 7.1 NVD
CVE-2026-111369
ClassroomIO through 1.0.0 contains an incorrect authorization vulnerability in the PUT and DELETE /:lessonId lesson routes that allows any course member, includ
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.
References
- https://github.com/classroomio/classroomio
- https://github.com/classroomio/classroomio/blob/v1.0.0/apps/api/src/middlewares/course-mem
- https://github.com/classroomio/classroomio/blob/v1.0.0/apps/api/src/routes/course/lesson.t
- https://hackmd.io/@hieuPenguinnn/classroomio-course-resource-id-scoping-idor
- https://www.vulncheck.com/advisories/classroomio-through-1.0.0-incorrect-authorization-via
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-10-15 via NVD.
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