CVE-2026-111369

ClassroomIO through 1.0.0 Incorrect Authorization via Lesson Update and Delete Routes

HIGH
7.1
CVSS Score
Published: October 15, 2026 at 09:43 PM UTC
Updated: October 16, 2026 at 06:25 PM UTC
1 product affected across 1 vendorClassroomio

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Severity
HIGH7.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHVulnCheck
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-863

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