CVE-2026-111716
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.
Does this matter?
Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 4.0
- 5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.18% probability · 7th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Source
- disclosure@vulncheck.com
EPSS moved from 0.2% on 17 October 2026 to 0.2% on 26 October 2026.
References
- https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L257-L275
- https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L295-L312
- https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L644-L673
- https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor
- https://www.vulncheck.com/advisories/arkon-through-0.9.2-broken-access-control-via-sources-by-id-routes
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.