SB2021050520 - Server-Side Request Forgery (SSRF) in Jellyfin

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Main Vulnerability Database SB2021050520

SB2021050520 - Server-Side Request Forgery (SSRF) in Jellyfin

Published: May 5, 2021 Updated: April 15, 2026

Security Bulletin ID SB2021050520
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2021-29490)

The vulnerability allows a remote attacker to disclose sensitive information from internal and external HTTP resources.

The vulnerability exists due to server-side request forgery in the Remote Image endpoints when handling unauthenticated GET requests with a user-supplied imageUrl parameter. A remote attacker can send a specially crafted request to disclose sensitive information from internal and external HTTP resources.

The issue affects the endpoints /Images/Remote, /Items/RemoteSearch/Image, and /Items/{itemId}/RemoteImages/Download, and can also be used to enumerate reachable HTTP services.


Remediation

Install update from vendor's website.

References