# CVE-2026-120199: LearnHouse missing authorization in assignment API

Source: https://junglewise.ai/threats/cve-2026-120199-learnhouse-before-1-1-1-contains-a-missing-authorization  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-31. Updated: 2026-10-31  
License: CC BY 4.0 with a link back

CVE-2026-120199 · Severity: medium · CVSS 4.3 · Published 2026-10-31

LearnHouse is an open-source learning platform that manages courses, assignments, and student submissions. Before version 1.1.1, authenticated users can bypass authorization checks in the assignment API to view other students' grades, submissions, and instructor feedback by manipulating user IDs in API requests. This allows students to see classmates' work and performance, compromising academic integrity and privacy.

Technologies: [Learnhouse](https://junglewise.ai/threats/technologies/learnhouse). Vendors: [Learnhouse](https://junglewise.ai/threats/vendors/learnhouse).

## Quick answers

**Is CVE-2026-120199 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-120199 being exploited in the wild.

**How severe is CVE-2026-120199?** Medium severity, with a CVSS score of 4.3, published 31 October 2026.

**Which products and versions are affected?** Learnhouse before 1.1.1.

**Is there a fix for CVE-2026-120199?** Yes: fixed in 1.1.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-120199 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-120199?** Check whether you run Learnhouse at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 1.1.1

## Technical details

The vulnerability is a missing authorization check in the assignment API's submission and grading endpoints. Authenticated attackers can supply arbitrary user_id parameters to endpoints like the submissions grade endpoint and submission read functions to access other users' data without proper permission validation. The flaw requires authentication but no additional preconditions beyond sending a request with a different user_id.

## Affected products

- LearnHouse LearnHouse before 1.1.1

## Timeline

- 2026-10-31: disclosed

## References

- [https://github.com/learnhouse/learnhouse](https://github.com/learnhouse/learnhouse)
- [https://github.com/learnhouse/learnhouse/blob/1.1.0/apps/api/src/services/courses/activities/assignments.py](https://github.com/learnhouse/learnhouse/blob/1.1.0/apps/api/src/services/courses/activities/assignments.py)

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