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TI-2026-75502 Aliases CVE-2026-111716GHSA-r63c-wh5x-45mr

Broken access control in Arkon exposes other departments' sources

Priority LOW 23CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Arkon through 0.9.2 has a broken access control flaw in its by-id source routes, which skip the document access check. A remote authenticated employee can read and modify other departments' sources, including derived wiki titles and summaries, and alter their ingestion state. The weakness is classified as CWE-639, authorization bypass through a user-controlled key.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00177 7th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
nduckminkarkonup to 0.9.2—No fix listedCNA
  • arkon Vendornduckmink Affected up to 0.9.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Arkon.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-111716
  2. 2026-10-16 Alias added: GHSA-r63c-wh5x-45mr
  3. 2026-10-18 CISA SSVC decision points changed

References

Advisory 1

Other 3

  • TI-2026-75503 Arkon missing authorization exposes other departments' skill versions CVSS 4.0MEDIUM 5.3
  • TI-2026-75501 Missing authorization in Arkon wiki graph API exposes page metadata CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences