Arbitrary Argument Injection Affecting jellyfin.common package, versions [,10.11.10)
Threat Intelligence
This vulnerability is trending on Twitter; this may indicate a growing threat.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published28 Jun 2026
- disclosed24 Jun 2026
- credita-maccormack
Introduced: 24 Jun 2026
NewCVE-2026-48793 (opens in a new tab)How to fix?
Upgrade Jellyfin.Common to version 10.11.10 or higher.
Overview
Jellyfin.Common is an a Free Software Media System that puts you in control of managing and streaming your media.
Affected versions of this package are vulnerable to Arbitrary Argument Injection via the SubtitleEncoder.ConvertTextSubtitleToSrtInternal process. An attacker can achieve arbitrary file write and information disclosure by injecting malicious arguments into the FFmpeg command line through specially crafted subtitle file paths containing double-quote characters. This is possible when an attacker is able to place a file in a media library directory, such as through a shared NAS, Samba share, or guest upload, and exploit the unauthenticated SubtitleController.GetSubtitle endpoint.