Missing Authorization in LearnHouse Assignment API Exposes User Information
CVE-2026-120199

5.3MEDIUM

Key Information:

Vendor

Learnhouse

Status
Learnhouse
Vendor
CVE Published:
31 October 2026

What is CVE-2026-120199?

LearnHouse prior to version 1.1.1 has a flaw in its assignment API that allows authenticated users to bypass access controls. This vulnerability enables attackers to manipulate the submission grade endpoint by supplying arbitrary user IDs, leading to unauthorized access to sensitive information, such as other users' grades, submissions, and instructor feedback. The issue poses a significant risk to user privacy and data integrity within the platform.

Affected Version(s)

learnhouse 0 < 1.1.1

References

https://github.com/learnhouse/learnhouse/issues/1184
issue-tracking
https://github.com/learnhouse/learnhouse/commit/844a8a778...
patch
https://github.com/learnhouse/learnhouse/pull/1187
issue-trackingpatch

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

HieuPenguinnn
.