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.
Does this matter?
Lower severity and a low EPSS score (0.27%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.27% probability · 19th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Source
- disclosure@vulncheck.com
EPSS moved from 0.3% on 17 October 2026 to 0.3% on 27 October 2026.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.