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Security report for 11ty.io

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 simple, fast, and flexible tool to build static 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 endorsements from major organizations such as NASA, Google, and Microsoft. The website provides comprehensive documentation, tutorials, and community resources, reflecting a mature and professional digital presence. Technically, Eleventy leverages modern JavaScript technologies and Node.js, ensuring fast build times and excellent performance. The site is mobile-optimized, accessible, and SEO-friendly, with no detected tracking or advertising scripts, emphasizing privacy and user control. Security posture is strong with HTTPS enforced and no telemetry, though explicit security policies and incident response contacts are not prominently displayed. Overall, Eleventy presents a trustworthy and credible platform for static site generation with a high level of technical and business maturity.

Scanned

This is an earlier scan of 11ty.io. 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.io

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.

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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
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, differentiating itself through speed, flexibility, and a zero-config approach. Its business model centers on open source development supported by community sponsorships and partnerships, such as with CloudCannon. The target audience includes web developers and technical users who value control and performance. The project demonstrates consistent growth, with over 13 million downloads and 82,000 dependent repositories on GitHub. Strategic partnerships and endorsements from industry leaders enhance its credibility and market reach. Eleventy's ecosystem includes plugins, services, and community events, fostering engagement and innovation. The absence of direct commercial offerings suggests a focus on community-driven development and support.

Security posture

The website exhibits a mature security posture with HTTPS enabled and no visible telemetry or tracking, aligning with privacy best practices. The absence of explicit security headers in the HTML limits the assessment but does not indicate immediate vulnerabilities. No sensitive data exposure or vulnerable libraries were detected. However, the lack of a published security policy, incident response contacts, or vulnerability disclosure mechanisms represents a compliance gap. The site does not implement cookie consent mechanisms, which may be relevant if cookies are used elsewhere. Overall, the security posture is strong but could be enhanced by formalizing policies and improving transparency around incident handling and data protection.

Recommendations

  1. Implement and publish explicit security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Add a clearly accessible security policy and incident response contact information to improve transparency and readiness for security incidents.
  3. Introduce a cookie consent mechanism if cookies are used, to comply with privacy regulations and enhance user trust.
  4. Publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  5. Provide clear and verified contact information for security and general inquiries to improve communication and trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Eleventy
Description
Eleventy is a simpler static site generator that compiles multiple template languages into static websites. It is production ready, fast, and offers full control over output without injecting markup. It supports incremental adoption and multiple template languages.
Key services
Static site generation, Template language support, Development server, Plugins and integrations
Content quality
excellent
Branding
consistent

Technology

Stack
Node.js, JavaScript, Liquid, Markdown, WebC, Nunjucks, Handlebars, Mustache, EJS, HAML, Pug, TypeScript, JSX, MDX, Sass
Frameworks
Eleventy
Performance
fast
Mobile
excellent
Accessibility
excellent
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced (implied by URL https://)
  • No telemetry or tracking
  • No client-side JavaScript by default
  • No injection of markup
  • No exposed sensitive data in HTML

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-established open source project with strong community and industry adoption.
  2. Content is developer-focused with extensive documentation and tutorials.
  3. No signs of malicious or suspicious activity.
  4. No explicit privacy or security policy pages found in the HTML but likely exist on the site.
  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. Strong social media presence on GitHub, Mastodon, YouTube, Bluesky, Discord.
  8. No advertising or tracking scripts detected in the HTML content.
Technical notes

Notes

The website is built using Eleventy v3.1.2, a modern static site generator leveraging Node.js and multiple template languages including Liquid, Markdown, and JavaScript variants. The site uses custom fonts, SVG icons, and a responsive design optimized for accessibility and SEO. Performance is fast, supported by efficient build processes and minimal client-side JavaScript. The technical implementation includes modular CSS, semantic HTML5, and progressive enhancement principles. No CMS or hosting provider is explicitly identified in the HTML, but the presence of CloudCannon as a sponsor suggests possible hosting or integration. The site demonstrates low technical debt and good modernization practices, with opportunities to enhance security headers and formalize privacy compliance mechanisms.
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. 63/100Medium32 findingsView report
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