Auth bypass in Learnhouse
CVE-2026-109564
LearnHouse before 1.4.0 contains a missing authorization vulnerability in POST /api/v1/playgrounds/{uuid}/duplicate that skips the read-access and draft checks enforced by get_playground. Authenticated users with playground creation rights, such as Instructors, who know a RESTRICTED or unpublished playground UUID can copy its html_content and republish it publicly.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/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/pull/1120 (issue-tracking, patch)
- github.com/learnhouse/learnhouse/commit/9a1319185a596ea9b40651dbfd96f05195c0be37 (patch)
- github.com/learnhouse/learnhouse (product)
- www.vulncheck.com/advisories/learnhouse-before-1.4.0-missing-authorization-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109564?
- CVE-2026-109564 is a low-severity vulnerability in Learnhouse, classified under Missing Authorization. CVSS score: 3.1/10. Published 2026-10-12.
- How severe is CVE-2026-109564?
- Low severity. CVSS v3 base score is 3.1 out of 10.