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.
Advisories

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Fixes

Solution

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Workaround

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History

Fri, 30 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Fri, 30 Oct 2026 11:45:00 +0000

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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-30T16:11:21.944Z

Reserved: 2026-10-30T10:53:25.542Z

Link: CVE-2026-119549

cve-icon Vulnrichment

Updated: 2026-10-30T16:11:16.551Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-30T12:16:41.330

Modified: 2026-10-30T19:14:38.697

Link: CVE-2026-119549

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T14:15:07Z

Weaknesses