CVE-2026-35034
Jellyfin is an open source self hosted media server. Versions prior to 10.11.7 contain a denial of service vulnerability in the SyncPlay group creation endpoint (POST /SyncPlay/New), where an authenticated user can create groups with names of unlimited size due to insufficient input validation. By sending large payloads combined with arbitrary group IDs, an attacker can lock out the endpoint for other clients attempting to join SyncPlay groups and significantly increase the memory usage of the Jellyfin process, potentially leading to an out-of-memory crash. This issue has been fixed in version 10.11.7.
- Affected products
- Jellyfin
- Jellyfin
- < 10.11.7
- Fix
- Available
- CVSS 3.1
- 6.5 MEDIUM
- EPSS
- 0.3% (17th percentile)
- Weakness
- CWE-400
- NVD status
- Analyzed
- Published
- 2026-04-14
No indexed exploits for CVE-2026-35034 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-35034 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.