What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-16
• Weakness: CWE-639

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

• nduckmink arkon: through 0.9.2

References

• https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/skills.py#L408-L425
• https://github.com/nduckmink/arkon/blob/v0.9.2/app/routers/skills.py#L427-L434
• https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor
• https://www.vulncheck.com/advisories/arkon-through-0.9.2-missing-authorization-via-skills-versions-api
• https://hackmd.io/@hieuPenguinnn/arkon-wiki-graph-cross-department-idor

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