CVE-2026-119549

EUVD-2026-113814
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.
SSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
jellyfinjellyfin
𝑥
≤ 12.4
CNA
Common Weakness Enumeration
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.cs#L96
https://github.com/jellyfin/jellyfin/blob/v12.4/src/Jellyfin.Drawing.Skia/SvgSecurityValidator.cs#L169-L173
https://github.com/jellyfin/jellyfin/security/advisories/GHSA-cf3c-8m59-2vhx
https://www.vulncheck.com/advisories/jellyfin-through-12.4-ssrf-via-gzip-compressed-data-uri-in-svg-profile-images