Is CVE-2026-119549 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-119549 being exploited in the wild.

How severe is CVE-2026-119549?

High severity, with a CVSS score of 7.1, published 30 October 2026.

Is there a fix for CVE-2026-119549?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-119549 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-119549?

Check whether you run Jellyfin at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-119549: Jellyfin server-side request forgery in SvgSecurityValidator

CVE-2026-119549 · Severity: high · CVSS 7.1 · Published 2026-10-30

Jellyfin is a free media server that allows users to manage and stream their personal media collections. An authenticated user can upload a specially crafted image file that bypasses security checks, allowing them to fetch internal URLs, read local files on the server, or cause memory exhaustion. Unauthenticated attackers can then trigger rendering of these malicious images to exploit the vulnerability.

Technologies: Jellyfin. Vendors: Jellyfin.

Quick answers

Is CVE-2026-119549 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-119549 being exploited in the wild.
How severe is CVE-2026-119549?: High severity, with a CVSS score of 7.1, published 30 October 2026.
Which products and versions are affected?: Jellyfin through 12.4.
Is there a fix for CVE-2026-119549?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-119549 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-119549?: Check whether you run Jellyfin at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in Jellyfin's SvgSecurityValidator, which fails to properly validate SVG content when it is embedded in gzip-compressed form within non-SVG image data URIs. An authenticated attacker can upload a malicious profile image via POST /UserImage that contains a disguised SVG payload, which is then rendered without proper validation when accessed unauthenticated via GET /UserImage. This allows server-side request forgery to access internal resources, local files, or exhaust server memory.

Affected products

Jellyfin Jellyfin through 12.4

Timeline

2026-10-30: disclosed

References

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