Is CVE-2026-35034 actively exploited?

No active exploitation of CVE-2026-35034 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-35034 be exploited remotely?

Yes. CVE-2026-35034 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-35034?

CVE-2026-35034 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-35034

CWE-400Published: April 14, 2026· Updated: Apr 17, 2026

6.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.8th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-35034 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.