---
id: "CVE-2026-122327"
kind: "vulnerability"
aliases: ["CVE-2026-122327"]
title: "Meelo: non-admin users can alter shared music catalog data"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["meelo", "package", "self-hosted"]
not_affected_if: ["admin-only-accounts", "single-user"]
published_at: "2026-11-05T16:17:45+00:00"
first_seen_at: "2026-11-05T16:40:02+00:00"
updated_at: "2026-11-05T16:41:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-122327", "first_seen_at": "2026-11-05T16:40:02+00:00"}]
exploit_sources: []
---

# Meelo: non-admin users can alter shared music catalog data

Meelo, a self-hosted music server, has a missing authorization check on its song, track and video write routes. A logged-in user without admin rights can change genres, move tracks between songs and merge songs, altering catalog data for everyone.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the Meelo version running on the server against the affected range (through `3.13.1`)
- Confirm whether non-admin accounts exist on the instance

## Timeline

- 2026-11-05T16:40:02+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-122327

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/meelo-through-3.13.1-missing-authorization-on-song-track-and-video-endpoints

## From the sources

Meelo through 3.13.1 contains a missing authorization vulnerability that allows authenticated non-admin users to modify shared catalog data because RolesGuard does not require Admin on song, track and video write routes. Attackers can send PUT requests to /songs/:idOrSlug, /tracks/:idOrSlug or /videos/:idOrSlug, or POST to /songs/:idOrSlug/merge, to alter genres, reassign tracks and merge songs.

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