CVE-2026-111717 (CVSS 4.3)

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.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0027

Probability of exploitation

0.19%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-639 CWE-639

References

Other 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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-111717? +

CVE-2026-111717 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0027, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-111717? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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