Vulnerability · Published Oct 16, 2026 · Assigned by VulnCheck

CVE-2026-111717Arkon through 0.9.2 Missing Authorization via Skills Versions API

Medium 4.3

In plain English

A medium-severity authorization bypass via user-controlled key in arkon from nduckmink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 80.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

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:N/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/skills.py#L427-L434 technical-description
https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/skills.py#L408-L425 technical-description
VulnCheck Advisory: Arkon through 0.9.2 Missing Authorization via Skills Versions API third-party-advisory