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.

CVSS 4.0

5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-25)

CWE

CWE-639

Published

2026-10-16

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/wiki.py#L621-L633
• https://github.com/nduckmink/arkon/blob/v0.9.2/app/services/wiki_service.py#L200-L257
• https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor
• https://www.vulncheck.com/advisories/arkon-through-0.9.2-missing-authorization-via-wiki-graph-neighborhood-api
• https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor

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