High severity7.1NVD Advisory· Published Oct 30, 2026
CVE-2026-119549
CVE-2026-119549
Description
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.
Affected products
1Patches
Vulnerability mechanics
References
5- abraxaslabs.tech/research/jellyfin-svg-gzipnvd
- github.com/jellyfin/jellyfin/blob/v12.4/Jellyfin.Api/Controllers/ImageController.csnvd
- github.com/jellyfin/jellyfin/blob/v12.4/src/Jellyfin.Drawing.Skia/SvgSecurityValidator.csnvd
- github.com/jellyfin/jellyfin/security/advisories/GHSA-cf3c-8m59-2vhxnvd
- www.vulncheck.com/advisories/jellyfin-through-12.4-ssrf-via-gzip-compressed-data-uri-in-svg-profile-imagesnvd
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