CVE-2026-111716

medium

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.

References

https://www.vulncheck.com/advisories/arkon-through-0.9.2-broken-access-control-via-sources-by-id-routes

https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor

https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L644-L673

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#L257-L275

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103008

Details

Source: Mitre, NVD

Published: 2026-10-16

Updated: 2026-10-16

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 5.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00177