cvedb.io
CVE-2026-49220
MEDIUM · CVSS 5.7
EPSS exploitation probability: 0%
Published 2026-06-24T19:17:11.240 · Last modified 2026-06-24T20:16:32.910

Summary

Jellyfin is an open source self hosted media server. Prior to 10.11.9, a potential XSS attack exists in Jellyfin which can allow a non-privileged user to execute arbitrary Javascript in the context of a logged-in Administrative user, resulting in numerous potential issues. The Client header during an AuthenticateByName can contain arbitrary HTML and Javascript, which will then be executed by the Administrative user when visiting the Access tab of the user in question from within the dashboard. This vulnerability is fixed in 10.11.9.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.