CVE-2021-29490
MediumVerions prior to 10.7.3 vulnerable to unauthenticated Server-Side Request Forgery (SSRF) attacks via the imageUrl parameter.
Published May 6, 2021 · Updated Aug 7, 2026 · Also known as GHSA-rgjw-4fwc-9v96
Key Facts
Patch immediately- CVE-2021-29490 is a medium-severity vulnerability (CVSS 5.8 v3.1) affecting Jellyfin.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 70% probability of exploitation in the next 30 days.
- Fixed versions are available, including Jellyfin 10.7.3.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
5.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
EPSS (30-day exploit likelihood)
70%
Higher than 99.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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Description
Jellyfin is a free software media system that provides media from a dedicated server to end-user devices via multiple apps. Verions prior to 10.7.3 vulnerable to unauthenticated Server-Side Request Forgery (SSRF) attacks via the imageUrl parameter. This issue potentially exposes both internal and external HTTP servers or other resources available via HTTP GET that are visible from the Jellyfin server. The vulnerability is patched in version 10.7.3. As a workaround, disable external access to the API endpoints /Items/*/RemoteImages/Download, /Items/RemoteSearch/Image and /Images/Remote via reverse proxy, or limit to known-friendly IPs.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| JellyfinJellyfin | >= <= 10.7.2 | 10.7.3 |
Patched Releases
Jellyfin
10.7.3
Timeline
Publicly disclosed
May 6, 2021
Last updated
Aug 7, 2026
Weakness Type
- CWE-918 Server-Side Request Forgery (SSRF)
References
FAQ
Common Questions.
Jellyfin is a free software media system that provides media from a dedicated server to end-user devices via multiple apps.
Affected: Jellyfin versions >= <= 10.7.2. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Jellyfin 10.7.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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