CVE-2026-109564: LearnHouse before 1.4.0 Missing Authorization via Playground Duplicate Endpoint
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-04 15:41 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
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 Authenticated users with playground creation rights, such as Instructors, who know a RESTRICTED or unpublished playground UUID can copy its html_content and republish it publicly.
Description quoted from the CVE record (assigned by VulnCheck, published 2026-10-12).
Weakness: Missing Authorization
How it can be exploited
Exploitable over the network with low attack complexity only when specific conditions are present needing low privileges and no user interaction. Impact: confidentiality low, integrity none, availability none. CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CISA assessment (SSVC): CISA has no evidence of exploitation. Automatable: no. Technical impact: partial.
Public exploit evidence (Exploit Observer)
Exploit Observer found 3 code repositories naming this CVE.
Code repositories that name a CVE are often scanners, copies or fakes, and some are malware. Read the code before running anything.
See all 6 references on Exploit Observer
Live scores
- EPSS
- 0.002
low predicted chance of attack - VEDAS
- 0.985
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- Suricata
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| LearnHouse | before 1.4.0 | 1.4.0 is not affected |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
Fixed versions stated in the CVE record: 1.4.0.
Vendor guidance:
- GitHub Pull Request #1120 (issue-tracking, patch)
- Patch Commit (patch)
How to detect it
Suricata rules (network detection)
1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-109564 LearnHouse - Missing Authorization Playground Duplicate. Add them to your Suricata rule set and reload.
Show the rules
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-109564 LearnHouse - Missing Authorization Playground Duplicate"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/v1/playgrounds/"; nocase; fast_pattern; content:"/duplicate"; nocase; pcre:"/\/api\/v1\/playgrounds\/[^\/]+\/duplicate/i"; classtype:web-application-attack; reference:cve,CVE-2026-109564; reference:url,https://www.exploit.observer/?keyword=CVE-2026-109564&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=learnhouse&match=exact; sid:1084802; rev:1;)
CVE-2026-109564.rules on GitHub
References
Vendor advisories and patches
- GitHub Pull Request #1120 (issue-tracking, patch)
- Patch Commit (patch)
Technical analysis and advisories
- VulnCheck Advisory: LearnHouse before 1.4.0 Missing Authorization via Playground Duplicate Endpoint (third-party-advisory)
Other references
- https://github.com/learnhouse/learnhouse (product)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
Supporting partners
