CVE-2026-119549
Jellyfin through 12.4 SSRF via Gzip-Compressed Data URI in SVG Profile Images
- State
- Published
- Severity
- 7.1 High
- Published
- Oct 30, 2026
- Updated
- Oct 30, 2026
- Reserved
- Oct 30, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
jellyfinjellyfin |
|
References
- https://github.com/jellyfin/jellyfin/blob/v12.4/src/Jellyfin.Drawing.Skia/SvgSecurityValidator.cs#L169-L173technical-description
- https://github.com/jellyfin/jellyfin/blob/v12.4/Jellyfin.Api/Controllers/ImageController.cs#L96technical-description
- GitHub Security Advisory (GHSA-cf3c-8m59-2vhx)relatedvendor-advisory
- https://abraxaslabs.tech/research/jellyfin-svg-gzipthird-party-advisory
- https://github.com/jellyfin/jellyfinproduct
- VulnCheck Advisory: Jellyfin through 12.4 SSRF via Gzip-Compressed Data URI in SVG Profile Imagesthird-party-advisory
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