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Security report for jellyfin.org

Jellyfin · Technology · Canada

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

67/100

Risk levelMedium

0–100, higher is better. How it is calculated

Jellyfin.org is the official website for Jellyfin, a volunteer-built, open source media server software that empowers users to manage and stream their media content from their own servers. The project positions itself as a leading free-software entertainment system, targeting end users who prefer self-hosted media solutions without vendor lock-in. The website is professionally designed, content-rich, and provides comprehensive documentation and community engagement channels such as forums and blogs. Technically, the site leverages modern web technologies including React and Docusaurus, hosted via Gandi SAS, with good performance and mobile optimization. Security posture is strong with HTTPS enforced and appropriate security headers, though DNSSEC is not enabled and no explicit security or incident response policies are published. Overall, Jellyfin.org demonstrates a mature digital presence with high trustworthiness and a clear focus on privacy and user control.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 100 · Medium
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

7 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

Need hands-on remediation? Email guard@offseq.com

Keep watching jellyfin.org

This scan found 24 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

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Full report

€39.90one-time

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
85
Security headers
15
Email security
70
DNS health
80
Network security
100
GDPR outside view
50
Average
67

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Jellyfin operates as a non-commercial, volunteer-driven open source project in the technology and media sectors. Its business model centers on community contributions and providing free software for media management and streaming. The project has established itself as a credible alternative to proprietary media servers, with a growing user base and active community forums. The website reflects a transparent and consistent brand, with no evidence of commercial advertising or tracking. The absence of direct contact emails or phone numbers suggests a community support model rather than traditional corporate customer service. The domain registration aligns with the project's Canadian origin and history since 2018, supporting legitimacy and stability.

Security posture

The website employs HTTPS with a good SSL configuration and implements multiple security headers, enhancing protection against common web threats. The domain status clientTransferProhibited adds a layer of domain security. However, the lack of DNSSEC and absence of a published security policy or vulnerability disclosure program indicate areas for improvement. No forms with sensitive data collection were detected, reducing exposure risk. The site does not appear to use third-party tracking or advertising scripts, minimizing privacy risks. Overall, the security posture is solid for an open source project website but could benefit from formalized security governance and incident response transparency.

Recommendations

  1. Enable DNSSEC to improve domain name system security.
  2. Implement a cookie consent banner to comply with privacy regulations.
  3. Publish a dedicated security policy and incident response contact information.
  4. Establish a vulnerability disclosure program or security.txt file.
  5. Enhance user trust by providing verified contact emails and additional business information.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Jellyfin
Description
Jellyfin is the volunteer-built media solution that puts you in control of your media. Stream to any device from your own server, with no strings attached.
Key services
Media server software, Streaming to any device, Self-hosted media management
Content quality
excellent
Branding
consistent

Technology

Stack
React, JavaScript, Docusaurus
Frameworks
Docusaurus v3.8.1
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enabled
  • Client transfer prohibited domain status

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
poor

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is a well-maintained open source media server project.
  2. Content is comprehensive and professionally presented.
  3. No signs of malicious or suspicious activity.
  4. Lacks explicit cookie consent mechanism.
  5. No public security incident response or vulnerability disclosure found.
Technical notes

Notes

The website is built using Docusaurus v3.8.1, a modern React-based static site generator optimized for documentation. The tech stack includes JavaScript and CSS assets with deferred loading for performance. Hosting is provided by Gandi SAS, a reputable registrar and hosting provider. The site demonstrates good SEO practices with comprehensive meta tags and Open Graph data. Accessibility and mobile responsiveness are well addressed. No deprecated or vulnerable libraries were detected in the provided scripts. Performance is moderate, with prefetching of assets to improve load times. The site architecture supports scalability and community engagement through forums and blogs.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

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