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CVE-2026-111368— ClassroomIO through 1.0.0 IDOR via Course Submission Update, Grade and Delete Routes

Quick assessment

Affected
classroomio ClassroomIO
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ClassroomIO 1.0.0 及更早版本在 Hono API 的课程提交路由中存在不安全的直接对象引用（Insecure Direct Object Reference, IDOR）漏洞，允许课程辅导教师或管理员修改其他课程中的学生提交内容。攻击者可以通过提供自己拥有的课程 ID 和另一个课程的学生提交 UUID，调用 PUT 或 DELETE 接口，从而覆盖答案、成绩、反馈意见以及评分状态，甚至删除提交内容。

CVSS 6.4 · Medium

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery
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I. Basic Information for CVE-2026-111368

Vulnerability Information
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Vulnerability Title
ClassroomIO through 1.0.0 IDOR via Course Submission Update, Grade and Delete Routes
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
classroomio ClassroomIO 0 ~ 1.0.0 -

II. Public POCs for CVE-2026-111368

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III. Intelligence Information for CVE-2026-111368

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Patches & Fixes for CVE-2026-111368 (1)

Vendor Advisories for CVE-2026-111368 (1)

Security Blog Posts for CVE-2026-111368 (1)

Other References for CVE-2026-111368 (1)

IV. Related Vulnerabilities

Same product: ClassroomIO
Same vendor: classroomio
Same weakness: CWE-639

V. Comments for CVE-2026-111368

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