Auth bypass in Learnhouse
CVE-2026-120199
LearnHouse before 1.1.1 contains a missing authorization vulnerability in the assignment API that allows authenticated users to read other users' grades and submissions. Attackers can supply another user_id to the submissions grade endpoint or query submission read functions to view other students' work, grades and instructor feedback.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/learnhouse/learnhouse/issues/1184 (issue-tracking)
- github.com/learnhouse/learnhouse/commit/844a8a7787f0c42d466be604aaf47d296748b1b3 (patch)
- github.com/learnhouse/learnhouse/pull/1187 (issue-tracking, patch)
- github.com/learnhouse/learnhouse/blob/1.1.0/apps/api/src/services/courses/activ… (technical-description)
- github.com/learnhouse/learnhouse (product)
- www.vulncheck.com/advisories/learnhouse-before-1.1.1-missing-authorization-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-120199?
- CVE-2026-120199 is a medium-severity vulnerability in Learnhouse, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-10-31.
- How severe is CVE-2026-120199?
- Medium severity. CVSS v3 base score is 4.3 out of 10.