Vulnerability · Published Oct 16, 2026 · Assigned by VulnCheck

CVE-2026-111716Arkon through 0.9.2 Broken Access Control via Sources By-ID Routes

Medium 5.4

In plain English

A medium-severity authorization bypass via user-controlled key in arkon from nduckmink. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 92.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
nduckmink	arkon	0 – through 0.9.2

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References

https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor third-party-advisory
https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L644-L673 technical-description
https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L295-L312 technical-description
https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/sources.py#L257-L275 technical-description
VulnCheck Advisory: Arkon through 0.9.2 Broken Access Control via Sources By-ID Routes third-party-advisory