CVE-2026-119551

Description

Jellyfin through 12.4 contains an authorization bypass vulnerability in SuggestionsController.GetSuggestions that allows authenticated non-administrator users to bypass library and parental restrictions by omitting the userId parameter. Attackers can repeatedly call GET /Items/Suggestions without userId to enumerate restricted items, including IDs and server filesystem paths, and then stream them.

References

• https://abraxaslabs.tech/research/jellyfin-suggestions-idor
• https://github.com/jellyfin/jellyfin
• https://github.com/jellyfin/jellyfin/blob/v12.4/Jellyfin.Api/Controllers/SuggestionsController.cs#L70-L95
• https://github.com/jellyfin/jellyfin/security/advisories/GHSA-9x85-gx46-6522
• https://www.vulncheck.com/advisories/jellyfin-through-12.4-authorization-bypass-via-get-items-suggestions