CVE-2026-119549
Jellyfin through 12.4 SSRF via Gzip-Compressed Data URI in SVG Profile Images
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | jellyfin |
| Product | jellyfin |
| Published | Oct 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
jellyfin / jellyfin
0 ≤ 12.4
References
github.com: https://github.com/jellyfin/jellyfin/blob/v12.4/src/Jellyfin.Drawing.Skia/SvgSecurityValidator.cs#L169-L173 github.com: https://github.com/jellyfin/jellyfin/blob/v12.4/Jellyfin.Api/Controllers/ImageController.cs#L96 github.com: https://github.com/jellyfin/jellyfin/security/advisories/GHSA-cf3c-8m59-2vhx abraxaslabs.tech: https://abraxaslabs.tech/research/jellyfin-svg-gzip github.com: https://github.com/jellyfin/jellyfin vulncheck.com: https://www.vulncheck.com/advisories/jellyfin-through-12.4-ssrf-via-gzip-compressed-data-uri-in-svg-profile-images
Credits
Abraxas Labs