CVE-2026-111716: Arkon broken access control in document routes

CVE-2026-111716 · Severity: medium · CVSS 5.4 · Published 2026-10-16

Arkon is a document management and ingestion platform. Authenticated employees can bypass access controls to read and modify documents belonging to other departments by directly accessing document IDs in API routes. An attacker could steal sensitive information like derived summaries or disrupt ingestion workflows for departments they should not have access to.

Technologies: Nduckmink Arkon. Vendors: Nduckmink.

Quick answers

Is CVE-2026-111716 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-111716 being exploited in the wild.
How severe is CVE-2026-111716?
Medium severity, with a CVSS score of 5.4, published 16 October 2026.
Which products and versions are affected?
Nduckmink Arkon through 0.9.2.
Is there a fix for CVE-2026-111716?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-111716 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-111716?
Check whether you run Nduckmink Arkon at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A broken access control vulnerability exists in app/routers/sources.py where by-id routes (plan, progress, PATCH, retry, approve-extraction) skip the can_access_document authorization check. An authenticated attacker can call these routes with foreign source IDs to read derived wiki titles and summaries or alter ingestion state without proper department-level authorization.

Affected products

  • nduckmink Arkon through 0.9.2

Timeline

  • 2026-10-16: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.