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Security report for supabase.com

Supabase · Technology · N/a

Low risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

77/100

Risk levelLow

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

Supabase is a technology company providing a Postgres development platform that enables developers and businesses to build scalable applications with integrated backend services such as authentication, realtime data, edge functions, storage, and vector embeddings. The company is positioned as a modern, open-source alternative to Firebase, targeting developers seeking a robust and extensible backend platform. The website demonstrates a high level of digital maturity with a modern tech stack including React and Next.js, hosted with Cloudflare and registered via Amazon Registrar. The site is well-designed, mobile-optimized, and provides clear navigation and rich content, reflecting professionalism and strong market positioning. Security posture is good with HTTPS and domain protection statuses, but could be enhanced by enabling DNSSEC and publishing explicit security and privacy policies. Overall, the website is trustworthy and safe, with no adult or questionable content detected.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

3 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 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 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

  3. 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

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching supabase.com

This scan found 19 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
45
Email security
85
DNS health
85
Network security
100
GDPR outside view
73
Average
77

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

Supabase operates in the technology sector, focusing on backend development platforms for application developers. Their business model is SaaS/PaaS with a freemium approach, supported by a strong open-source community as evidenced by their GitHub repository with over 90K stars. The company targets developers and enterprises needing scalable, production-grade Postgres databases and related backend services. Their market position is strengthened by partnerships and endorsements from well-known companies such as Mozilla, GitHub, and PwC. The platform supports multiple frameworks and integrates with popular ML models, indicating a forward-looking product roadmap. However, the absence of explicit contact and compliance information on the website suggests areas for improvement in customer engagement and regulatory transparency.

Security posture

The website employs HTTPS and has domain registration protections such as clientDeleteProhibited, clientTransferProhibited, and clientUpdateProhibited statuses, indicating a secure domain management practice. However, DNSSEC is not enabled, which is a recommended security enhancement. No explicit security policies, incident response contacts, or vulnerability disclosure programs are published, which limits transparency and may impact trust from security-conscious users. The presence of tracking scripts indicates moderate user tracking, but no sensitive data exposure or vulnerable libraries were detected in the analyzed content. Overall, the security posture is solid but could benefit from improved policy disclosures and DNS security enhancements.

Recommendations

  1. Enable DNSSEC to enhance DNS security and prevent spoofing.
  2. Publish comprehensive privacy and cookie policies with clear consent mechanisms to improve GDPR compliance.
  3. Add explicit security and incident response policies, including contact channels for security issues.
  4. Implement and publicize a vulnerability disclosure program and security.txt file to foster responsible reporting.
  5. Provide clear contact information including emails and phone numbers for customer support and data protection officer.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Supabase
Description
Supabase is the Postgres development platform that enables building production-grade applications with a Postgres database, Authentication, instant APIs, Edge Functions, Realtime subscriptions, Storage, and Vector embeddings.
Key services
Postgres Database, Authentication, Edge Functions, Realtime subscriptions, Storage, Vector embeddings
Content quality
excellent
Branding
consistent

Technology

Stack
Postgres, Cloudflare (DNS and CDN), React (implied by references to React quickstart), Next.js (implied by quickstart links), JavaScript, SVG graphics
Frameworks
Next.js, React
Platforms
Supabase Platform
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enabled (implied by https URL)
  • Domain status includes clientDeleteProhibited, clientTransferProhibited, clientUpdateProhibited

Analytics and tracking

Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
ss.supabase.com (likely tracking/analytics)
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design.
  2. No explicit privacy, cookie, or terms of service pages found in the provided content.
  3. No direct contact emails or phone numbers found in the visible content.
  4. Strong branding and trust signals via GitHub stars and customer logos.
  5. Modern tech stack and good SEO and accessibility practices observed.
  6. Security practices could be improved by enabling DNSSEC and publishing security policies.
  7. No suspicious or malicious content detected.
  8. No adult or NSFW content detected.
Technical notes

Notes

The website is built using modern web technologies including React and Next.js frameworks, served via Cloudflare CDN, and uses SVG graphics for scalable visuals. The domain is registered with Amazon Registrar and uses Cloudflare for DNS, indicating reliable hosting and infrastructure. Performance is fast with good mobile optimization and accessibility features. SEO is well addressed with proper meta tags and Open Graph data. The site includes tracking scripts for analytics but lacks visible cookie consent mechanisms. Technical debt appears low with a clean, well-structured codebase and no broken elements detected. Opportunities exist to improve security headers and DNS security configurations.
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. 76/100 −2Low28 findingsView report
  2. 78/100Low22 findingsView report
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