Vulnerability · Published Nov 5, 2026 · Assigned by VulnCheck

CVE-2026-122327Meelo through 3.13.1 Missing Authorization on Song, Track and Video Endpoints

Medium 4.3

In plain English

A medium-severity missing authorization in Meelo from Arthi-chaud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 88.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Arthi-chaud	Meelo	0 – through 3.13.1

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

https://github.com/Arthi-chaud/Meelo/issues/2185 issue-tracking
https://github.com/Arthi-chaud/Meelo/blob/v3.13.1/server/src/authentication/roles/roles.guard.ts#L48-L117 technical-description
https://github.com/Arthi-chaud/Meelo/blob/v3.13.1/server/src/song/song.controller.ts#L275-L309 technical-description
https://github.com/Arthi-chaud/Meelo/blob/v3.13.1/server/src/track/track.controller.ts#L145-L160 technical-description
https://github.com/Arthi-chaud/Meelo/blob/v3.13.1/server/src/video/video.controller.ts#L131-L149 technical-description
https://hackmd.io/@hieund/meelo-catalog-metadata-write-missing-admin-authz third-party-advisory
https://github.com/Arthi-chaud/Meelo product
VulnCheck Advisory: Meelo through 3.13.1 Missing Authorization on Song, Track and Video Endpoints third-party-advisory