---
id: CVE-2026-111716
title: Arkon through 0.9.2 Broken Access Control via Sources By-ID Routes
summary: >-
  Arkon through 0.9.2 contains a broken access control vulnerability that allows
  authenticated employees to read and modify other departments' sources because
  by-id routes in app/routers/sources.py skip can_access_document. Attackers can
  c…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: nduckmink
product: arkon
affected:
  - arkon <= 0.9.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T19:34:17.036213Z'
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T21:16:33.552Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111716'
references:
  - url: 'https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor'
  - url: >-
      https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L644-L673
  - url: >-
      https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L295-L312
  - url: >-
      https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L257-L275
  - url: >-
      https://www.vulncheck.com/advisories/arkon-through-0.9.2-broken-access-control-via-sources-by-id-routes
    label: >-
      VulnCheck Advisory: Arkon through 0.9.2 Broken Access Control via Sources
      By-ID Routes
tags:
  - cve.org
ingestedAt: '2026-10-16T18:43:08.639Z'
---

## Overview

Arkon through 0.9.2 contains a broken access control vulnerability that allows authenticated employees to read and modify other departments' sources because by-id routes in app/routers/sources.py skip can_access_document. Attackers can call the plan, progress, PATCH, retry and approve-extraction routes with foreign source IDs to disclose derived wiki titles and summaries and alter ingestion state.

## Affected

- `arkon <= 0.9.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.