CVE-2026-119549

Jellyfin through 12.4 SSRF via Gzip-Compressed Data URI in SVG Profile Images

Published Oct 30, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Jellyfin through 12.4 SSRF via Gzip-Compressed Data URI in SVG Profile Images
First Time appeared Jellyfin
Jellyfin jellyfin
Weaknesses CWE-918
CPEs cpe:2.3:a:jellyfin:jellyfin:*:*:*:*:*:*:*:*
Vendors & Products Jellyfin
Jellyfin jellyfin
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 30, 2026, 4:11 PM
Reserved
Oct 30, 2026, 10:53 AM
Status
Awaiting Analysis
Published
Oct 30, 2026, 12:16 PM
Modified
Oct 30, 2026, 7:14 PM