Auth bypass in Nduckmink Arkon
CVE-2026-111715
Arkon through 0.9.2 contains a missing authorization vulnerability in GET /api/wiki/graph that lets authenticated employees read other departments' wiki metadata by supplying a foreign slug. Attackers with only wiki:read:own_dept permission can query get_neighborhood() without scope checks to obtain page slugs, titles, types and link edges up to depth 3.
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
- hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor (third-party-advisory)
- github.com/nduckmink/arkon/blob/v0.9.2/app/routers/wiki.py (technical-description)
- github.com/nduckmink/arkon/blob/v0.9.2/app/services/wiki_service.py (technical-description)
- www.vulncheck.com/advisories/arkon-through-0.9.2-missing-authorization-via-wiki… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111715?
- CVE-2026-111715 is a medium-severity vulnerability in Nduckmink Arkon, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-10-16.
- How severe is CVE-2026-111715?
- Medium severity. CVSS v3 base score is 4.3 out of 10.