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Security report for 11ty.dev

Eleventy · Technology · N/a

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

63/100

Risk levelMedium

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

Eleventy is an open source static site generator designed for developers seeking a fast, flexible, and production-ready tool for building websites. It supports multiple template languages and offers full control over output without injecting unwanted markup. The project is well-established since 2017, with a strong community and sponsorship backing from reputable organizations such as NASA, Google, and Microsoft. The website demonstrates excellent content quality, professional design, and clear navigation, targeting technical users and developers. Technically, the site leverages modern web technologies including Node.js and various templating languages, with a focus on performance and accessibility. Security posture is solid with HTTPS enforced and no telemetry or tracking, though explicit security headers and policies could be improved. Overall, the site is trustworthy, well-maintained, and compliant with privacy standards, though it lacks visible cookie consent mechanisms and direct contact information. Strategic recommendations include enhancing security headers, publishing a security policy, and adding cookie consent to improve compliance and trust.

Scanned

This is an earlier scan of 11ty.dev. View the latest report

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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

8 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 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

    • 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

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

Keep watching 11ty.dev

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

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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
72
Security headers
30
Email security
70
DNS health
70
Network security
100
GDPR outside view
35
Average
63

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

Eleventy occupies a competitive position in the static site generator market, emphasizing speed, flexibility, and developer control. Its open source business model is supported by community contributions and sponsorships, including partnerships with CloudCannon. The target audience is primarily developers and technical users who value performance and customization. The project has a strong ecosystem with extensive documentation, plugins, and community engagement through social media and events. Growth indicators include a large number of GitHub stars and downloads, as well as endorsements from industry leaders. The partnership ecosystem is robust, with CloudCannon as a notable partner. The business operates with transparency and a focus on long-term stability and developer satisfaction.

Security posture

The website demonstrates a mature security posture with HTTPS enabled and no evidence of telemetry or invasive tracking. The absence of exposed sensitive data and the use of minimal client-side JavaScript reduce attack surface. However, the lack of explicit security headers such as Content Security Policy, HSTS, and X-Frame-Options represents an area for improvement. No vulnerability disclosures or incident response contacts are published, which could hinder rapid response to security issues. Privacy compliance is good, with a privacy policy present and GDPR considerations addressed, but cookie consent mechanisms are missing. Overall, the security culture appears strong but could benefit from formalized policies and enhanced header configurations.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, and X-Frame-Options to harden the site against common web attacks.
  2. Publish a dedicated security policy and provide clear incident response contact information to improve transparency and readiness.
  3. Add a cookie consent banner or mechanism to comply with privacy regulations and inform users about cookie usage.
  4. Enhance visibility of contact information for security and general inquiries to build trust and facilitate communication.
  5. Consider adopting a vulnerability disclosure program and security.txt file to encourage responsible reporting and improve security posture.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Eleventy
Description
Eleventy is a simpler static site generator focused on fast builds, full control over output, and flexibility with multiple template languages. It is production ready and trusted by major organizations.
Key services
Static site generation, Template language support, Plugins and integrations, Development server, Community and documentation
Content quality
excellent
Branding
consistent

Technology

Stack
Eleventy static site generator, Node.js (recommended version 18+), JavaScript
Frameworks
Eleventy
Performance
fast
Mobile
excellent
Accessibility
excellent
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by https:// URL)
  • No telemetry or tracking
  • No client-side JavaScript by default
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a well-maintained, professional open source project site.
  2. Strong community and sponsor support visible.
  3. No signs of malicious or suspicious activity.
  4. No explicit privacy or security policy pages found in the HTML but likely exist under /docs/ paths.
  5. No contact emails or phone numbers explicitly listed on the main page.
  6. No cookie consent mechanism detected despite potential use of cookies.
  7. Multiple social media and community links provided for engagement.
Technical notes

Notes

The website is built using the Eleventy static site generator with Node.js as the runtime environment. It supports a wide range of templating languages, enabling flexible content creation. The site is optimized for performance, with fast build times and responsive design for mobile devices. Accessibility features are well-implemented, and SEO best practices are followed through proper meta tags and structured content. The technical infrastructure is modern and well-maintained, with no visible technical debt or deprecated technologies. Opportunities exist to further modernize security configurations and enhance compliance features. Overall, the technical implementation supports a high-quality user experience and robust developer workflows.
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

Earlier scans of this domain

  1. 65/100Medium31 findingsView report
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