Authorization Bypass Through User-Controlled Key Affecting go.senan.xyz/gonic/server/ctrlsubsonic package, versions <0.21.0


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.29% (22nd percentile)

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  • Snyk IDSNYK-GOLANG-GOSENANXYZGONICSERVERCTRLSUBSONIC-17750803
  • published7 Jul 2026
  • disclosed26 Jun 2026
  • creditUnknown

Introduced: 26 Jun 2026

CVE-2026-49338  (opens in a new tab)
CWE-285  (opens in a new tab)
CWE-639  (opens in a new tab)

How to fix?

Upgrade go.senan.xyz/gonic/server/ctrlsubsonic to version 0.21.0 or higher.

Overview

Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key in the ServeDeletePlaylist and ServeGetPlaylist handlers, which fail to enforce per-resource authorization. An attacker can access or delete any user's playlist, including private or administrator-owned playlists, by supplying a valid playlist ID, which is predictable due to its construction from user IDs and filenames.

CVSS Base Scores

version 4.0
version 3.1