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Security report for yunohost.org

YunoHost · Technology · N/a

Medium risk. 4 critical or high findings in GDPR outside view and SSL/TLS.

Security score

70/100

Risk levelMedium

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

YunoHost is an open-source, volunteer-driven non-profit project founded in 2012 that provides an easy-to-use system for self-hosting digital services on personal or organizational servers. It targets individuals, small organizations, and associations seeking to control their own digital infrastructure with minimal technical knowledge. The platform offers a variety of applications including mail hosting, cloud storage, social networks, and more, emphasizing privacy, decentralization, and digital sovereignty. The website reflects a consistent brand and community-oriented approach with multilingual support and active donation campaigns. Technically, the website is built with modern web standards including HTML5, CSS3, and JavaScript, using fonts like Source Sans 3 and icon sets such as Font Awesome. It is hosted by OVH sas, a reputable provider, and the domain is well-established since 2012. The site is mobile-optimized, accessible, and SEO-friendly, though performance is moderate. No CMS or major frameworks are explicitly detected. The site lacks advanced security headers and DNSSEC is not enabled, representing areas for improvement. From a security perspective, the site uses HTTPS and has domain status protections against unauthorized transfers or deletions. However, it lacks explicit security headers and cookie consent mechanisms, and no vulnerability disclosure or incident response contacts are published. No sensitive data exposure or vulnerabilities are evident in the content. The overall security posture is moderate but could be enhanced by adopting best practices such as enabling DNSSEC, adding security headers, and publishing clear privacy and security policies. Overall, YunoHost presents a trustworthy and professional presence consistent with its open-source community-driven mission. The site is safe, free of adult or questionable content, and provides clear information about its services and community. Strategic recommendations include improving privacy compliance, enhancing security configurations, and publishing vulnerability disclosure information to strengthen trust and security culture.

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

4 findings rated critical or high. Fix these first.

  1. 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

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      SSL Certificate Expires Soon

      SSL certificate expires in 18 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

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

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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
90
Email security
70
DNS health
85
Network security
40
GDPR outside view
50
Average
70

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

YunoHost occupies a niche market in the open-source self-hosting ecosystem, appealing to privacy-conscious users and small organizations. Its competitive advantage lies in ease of use, community support, and a strong ideological stance on decentralization and digital sovereignty. The business model is non-profit and donation-based, supported by sponsors providing infrastructure and grants. The target customers include individuals, associations, and small companies seeking alternatives to centralized cloud services. Growth indicators include active donation campaigns and a vibrant community forum. The partnership ecosystem includes sponsors like NLnet, NGI, and others, enhancing infrastructure and credibility. Operationally, the project relies on volunteers and open collaboration, with transparent code repositories and documentation. Market presence is stable with a long domain history and consistent branding.

Security posture

The security maturity level of YunoHost's website is moderate. HTTPS is enforced, and domain registration protections are in place. However, the absence of DNSSEC and security headers such as Content Security Policy, HSTS, and X-Frame-Options reduces the overall security posture. There is no visible cookie consent mechanism or detailed privacy policy addressing GDPR compliance, which may pose compliance risks. Incident response and vulnerability disclosure information are not published, limiting transparency and readiness. No exposed sensitive data or vulnerable libraries were detected in the HTML content. The security culture appears community-driven but could benefit from formalizing policies and improving technical defenses to mitigate potential risks.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Implement and configure HTTP security headers including CSP, HSTS, X-Frame-Options, and X-Content-Type-Options.
  3. Publish a comprehensive privacy policy and cookie consent mechanism to improve GDPR compliance.
  4. Establish and publicize a vulnerability disclosure policy and incident response contact channels.
  5. Regularly audit and update SSL/TLS configurations to achieve a higher security rating.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
YunoHost
Description
YunoHost is a system that installs itself on a server and allows you to install and maintain - with very little technical knowledge - digital services (apps) that you control.
Key services
Server management, App installation and maintenance, Digital services hosting (mail, cloud, wiki, social network, etc.)
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Font Awesome, Source Sans 3 font
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
65/100
Good practices seen
  • HTTPS enforced (implied by og:url https)
  • Domain status includes clientDeleteProhibited and clientTransferProhibited

Analytics and tracking

Tracking level
minimal
Privacy practices
basic

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with rich content and navigation.
  2. No privacy or cookie banner detected, indicating limited compliance with cookie consent regulations.
  3. No direct contact emails or phone numbers found on main page or footer.
  4. Strong community focus with multiple support channels (forum, chat).
  5. No explicit security headers or advanced security mechanisms visible in HTML.
  6. Donation-based funding model with visible sponsors.
  7. No advertising or tracking scripts detected.
  8. No forms collecting personal data on main page.
  9. Multiple language support available.
  10. Good mobile and accessibility features implemented.
Technical notes

Notes

The website uses a clean, modern front-end stack with HTML5, CSS3, and JavaScript, leveraging fonts and icon libraries for UI consistency. Hosting is provided by OVH sas, a reputable provider, with domain registration dating back to 2012, indicating stability. The site is mobile responsive and accessible, with good SEO practices including Open Graph metadata. However, no major CMS or JavaScript frameworks are detected, suggesting a lightweight custom implementation. Performance is moderate, with no obvious broken elements. Technical debt appears low, but security enhancements and privacy compliance improvements are needed to reduce risks and modernize the platform further.
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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