HIGH 7.1 NVD
CVE-2026-119549
Jellyfin through 12.4 contains a server-side request forgery vulnerability that lets authenticated users bypass SvgSecurityValidator by embedding gzip-compresse
Jellyfin through 12.4 contains a server-side request forgery vulnerability that lets authenticated users bypass SvgSecurityValidator by embedding gzip-compressed SVG in non-SVG image data URIs. Attackers can upload such profile images via POST /UserImage, then trigger unauthenticated rendering via GET /UserImage to fetch internal URLs, read local image files, or exhaust memory.
References
- https://abraxaslabs.tech/research/jellyfin-svg-gzip
- https://github.com/jellyfin/jellyfin
- https://github.com/jellyfin/jellyfin/blob/v12.4/Jellyfin.Api/Controllers/ImageController.c
- https://github.com/jellyfin/jellyfin/blob/v12.4/src/Jellyfin.Drawing.Skia/SvgSecurityValid
- https://github.com/jellyfin/jellyfin/security/advisories/GHSA-cf3c-8m59-2vhx
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-10-30 via NVD.
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