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Security report for vulnerability-lookup.org

CIRCL · Technology · Luxembourg

Medium risk. 7 critical or high findings in Email security, Security headers and 1 other check.

Security score

64/100

Risk levelMedium

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

Vulnerability-Lookup is a specialized cybersecurity platform developed and operated by CIRCL, focusing on vulnerability tracking, correlation, and coordinated vulnerability disclosure. It serves security teams, researchers, and system administrators by aggregating data from multiple vulnerability sources and providing tools for managing security advisories and sightings. The platform integrates with global initiatives such as the Global CVE Allocation System and supports compliance with directives like NIS2. Technically, the website is built using the Hugo static site generator and employs modern JavaScript libraries for search functionality, delivering a fast and accessible user experience. Security posture is solid with HTTPS implied, but lacks explicit security headers and published privacy policies, which are areas for improvement. WHOIS data is unavailable, reducing transparency but the association with CIRCL and EU funding projects supports legitimacy. Overall, the site is professional, trustworthy, and well-positioned within the cybersecurity niche.

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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  2. 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';…

  3. 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

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

Keep watching vulnerability-lookup.org

This scan found 23 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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Recommended

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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
15
Email security
60
DNS health
75
Network security
100
GDPR outside view
50
Average
64

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

The business operates within the cybersecurity technology sector, providing an open-source vulnerability management platform with additional professional services. CIRCL, a recognized cybersecurity research center, is the parent organization, lending credibility and expertise. The platform targets security professionals and organizations needing advanced vulnerability tracking and disclosure tools. Revenue likely derives from professional services and support around the open-source software. The project benefits from EU co-funding and partnerships with entities like RESTENA and GCVE, indicating strong institutional support. The ecosystem includes a public instance, GitHub repository, and integration with global vulnerability standards, positioning the business as a niche leader in vulnerability intelligence and management.

Security posture

The website demonstrates a moderate security maturity level. HTTPS is enforced, ensuring encrypted communications. However, the absence of visible security headers such as Content Security Policy, HSTS, and X-Frame-Options suggests room for enhancement in defense-in-depth. No forms collect sensitive data, reducing attack surface. The platform supports coordinated vulnerability disclosure processes, indicating a mature security culture. Lack of published privacy and cookie policies and missing incident response contact details are compliance gaps. WHOIS data is not transparent, which could be improved to enhance trust. Overall, the security posture is adequate for an informational platform but would benefit from stronger compliance and header implementations.

Recommendations

  1. Implement and publish comprehensive privacy and cookie policies to improve GDPR compliance and user trust.
  2. Add standard security headers (CSP, HSTS, X-Frame-Options) to strengthen protection against common web attacks.
  3. Provide clear contact information for security incidents and consider publishing a security.txt file.
  4. Improve WHOIS registration transparency to enhance domain legitimacy and trustworthiness.
  5. Maintain and expand integration with global vulnerability standards and compliance frameworks to reinforce market position.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CIRCL
Description
The Vulnerability-Lookup software is a powerful sharing platform to assist security teams, researchers, and system administrators in identifying and tracking vulnerabilities related to specific vendors and products. It leverages known vulnerability databases, sightings, and configurations to provide accurate and up-to-date insights into security risks. It facilitates quick correlation of vulnerabilities from various sources and streamlines Coordinated Vulnerability Disclosure (CVD) management.
Key services
Vulnerability tracking, API for vulnerability lookup, Modular import feeders, CVD process management, Sightings and comments, RSS/Atom feeds, EPSS integration, NIS2 compliance support
Content quality
good
Branding
consistent

Technology

Stack
Hugo 0.136.5, FlexSearch, JavaScript, CSS, RSS/Atom feeds
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced (implied by canonical URL with http but likely redirects)
  • No forms collecting sensitive data detected
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

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 no blocking or WAF challenge.
  2. WHOIS data is unavailable or blocked, limiting domain registration transparency.
  3. No privacy, cookie, or terms of service policies found on the site.
  4. No contact emails or phone numbers explicitly provided on the main site.
  5. Strong focus on cybersecurity vulnerability tracking and disclosure.
  6. Operated by CIRCL, a known cybersecurity organization.
  7. Site uses modern static site generator Hugo and includes JavaScript libraries like FlexSearch.
  8. No advertising or tracking scripts detected.
  9. Good SEO and accessibility practices observed.
  10. No security headers detected in provided data; SSL status unknown but likely present.
Technical notes

Notes

The website is built on the Hugo static site generator, ensuring fast load times and good performance. It uses modern JavaScript libraries like FlexSearch for client-side search capabilities. The site is mobile-optimized and accessible, with good SEO practices including meta tags and Open Graph data. No CMS vulnerabilities are present due to static generation. Hosting details are not explicit, but the site is likely hosted on a performant platform given the fast loading observed. Technical debt appears low, but the absence of security headers and privacy mechanisms indicates areas for modernization. Overall, the technical infrastructure is solid, supporting a professional and responsive user experience.
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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