CVE-2026-111369
High
Description
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.
SeverityHigh
CVSS7.1
Exploit probability—
ProductClassroomIO
PublishedOct 15, 2026
First seenOct 15, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| classroomio ClassroomIO | v ≤ 1.0.0 | — |
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