CVE-2026-42605
Medium
Elevated severity or exploit probability.
CVSS base
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
1.0%
62.1th percentile
CISA KEV
Not listed
Weakness / dates
CWE-22
Published 2026-05-09 · modified 2026-07-24
Description
AzuraCast is a self-hosted, all-in-one web radio management suite. Prior to version 0.23.6, the currentDirectory request parameter in the Flow.js media upload endpoint (POST /api/station/{station_id}/files/upload) is not sanitized for path traversal sequences. When combined with a local filesystem storage backend (the default), an authenticated user with media management permissions can write arbitrary files outside the station's media storage directory, achieving remote code execution by writing a PHP webshell to the web root. This issue has been patched in version 0.23.6.
Affected
References
- https://github.com/AzuraCast/AzuraCast/commit/18c793b4427eb49e67a2fea99a89f1c9d9dd808d
- https://github.com/AzuraCast/AzuraCast/releases/tag/0.23.6
- exploit https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-vp2f-cqqp-478j
- exploit https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-vp2f-cqqp-478j