Missing authorization in Meelo lets users modify shared catalog data
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
Meelo through 3.13.1 has a missing authorization flaw (CWE-862) in its song, track and video write routes. Because the role check does not require the Admin role on these routes, an authenticated non-admin user with low privileges can modify shared catalog data, such as song genres, track assignments and merged songs.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Arthi-chaud | Meelo | up to 3.13.1 | — | No fix listed | CNA |
- Meelo VendorArthi-chaud Affected up to 3.13.1 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Meelo.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Vendor assessments
Timeline
- 2026-11-05 Threatist record created from CVE-2026-122327
- 2026-11-05 Alias added: GHSA-xxcj-wcr3-qvg7
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
Other 6
- https://github.com/Arthi-chaud/Meelo/issues/2185
- https://github.com/Arthi-chaud/Meelo/blob/v3.13.1/server/src/authentication/roles/roles.guard.ts#L48-L117
- https://github.com/Arthi-chaud/Meelo/blob/v3.13.1/server/src/song/song.controller.ts#L275-L309
- https://github.com/Arthi-chaud/Meelo/blob/v3.13.1/server/src/track/track.controller.ts#L145-L160
- https://github.com/Arthi-chaud/Meelo/blob/v3.13.1/server/src/video/video.controller.ts#L131-L149
- https://github.com/Arthi-chaud/Meelo
Sources
- CVE-2026-122327 · CVE Program
- CVE-2026-122327 · NVD
- FIRST EPSS
- GHSA-xxcj-wcr3-qvg7 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-122327 · Red Hat security data · CC BY 4.0
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