What is CVE-2026-111717?

CVE-2026-111717 is a medium-severity vulnerability in Nduckmink Arkon, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-10-16.

How severe is CVE-2026-111717?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Nduckmink Arkon

CVE-2026-111717

Arkon through 0.9.2 contains a missing authorization vulnerability in list_skill_versions that allows authenticated employees to read other departments' skill version metadata by bypassing the can_access_skill check. Attackers holding the default skill:read permission can request GET /api/skills/{slug}/versions for another department's skill to obtain version numbers, hashes, storage paths and changelogs.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Nduckmink Arkon

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor (third-party-advisory)
github.com/nduckmink/arkon/blob/v0.9.2/app/routers/skills.py (technical-description)
github.com/nduckmink/arkon/blob/v0.9.2/app/routers/skills.py (technical-description)
www.vulncheck.com/advisories/arkon-through-0.9.2-missing-authorization-via-skil… (third-party-advisory)

Frequently asked questions

What is CVE-2026-111717?: CVE-2026-111717 is a medium-severity vulnerability in Nduckmink Arkon, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-10-16.
How severe is CVE-2026-111717?: Medium severity. CVSS v3 base score is 4.3 out of 10.