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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

76/100

Risk levelLow

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

Supabase is a technology company providing a comprehensive Postgres development platform that enables developers to build production-grade applications with integrated backend services such as authentication, realtime subscriptions, edge functions, storage, and vector embeddings. The company has positioned itself as a leading open-source alternative in the backend-as-a-service market, targeting developers and businesses seeking scalable and easy-to-use backend infrastructure. The website demonstrates a mature technical infrastructure leveraging modern frameworks like Next.js and ReactJS, hosted with Cloudflare and registered via Amazon Registrar, ensuring robust performance and security. Security posture is strong with HTTPS enforcement and security headers, though DNSSEC is not enabled and incident response policies are not publicly detailed. Overall, the site is professional, trustworthy, and well-optimized for user experience and SEO.

Scanned

This is an earlier scan of supabase.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
68/ 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 20 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
68
Average
76

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 with a business model centered on platform-as-a-service offerings. Their market position is strengthened by a strong open-source community presence, notable customer logos, and a high GitHub star count. Revenue streams likely include paid tiers and enterprise offerings, with a target audience of developers and companies building scalable applications. The company shows consistent branding and professional content, with a growing ecosystem of integrations and partnerships. No parent or subsidiary companies were identified, indicating an independent operation.

Security posture

The website exhibits a high level of security maturity with HTTPS enabled, multiple security headers, and domain status protections to prevent unauthorized changes. No vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of DNSSEC and a publicly available security policy or incident response contact reduces transparency. There is no evidence of a vulnerability disclosure program or security.txt file. Privacy compliance is supported by the presence of privacy and cookie policies with consent mechanisms, indicating GDPR awareness. Incident response readiness and DPO contact information are not publicly available, suggesting areas for improvement.

Recommendations

  1. Enable DNSSEC to enhance domain name system security and prevent DNS spoofing.
  2. Publish a dedicated security policy page and provide clear incident response contact channels such as security@ or abuse@ emails.
  3. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting of security issues.
  4. Enhance contact information by providing verified company emails and phone numbers for support and sales to improve trust and accessibility.
  5. Regularly review and update privacy and cookie policies to maintain compliance with evolving regulations and improve transparency.
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, Realtime subscriptions, Edge Functions, Storage, and Vector embeddings.
Key services
Postgres Database, Authentication, Edge Functions, Realtime subscriptions, Storage, Vector embeddings
Content quality
excellent
Branding
consistent

Technology

Stack
Postgres, ReactJS, Next.js, Cloudflare (DNS and CDN), JavaScript, SVG, RESTful APIs
Frameworks
Next.js, ReactJS
Platforms
Cloudflare
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Domain status includes clientDeleteProhibited, clientTransferProhibited, clientUpdateProhibited
  • No exposed sensitive data detected in HTML
  • Use of Cloudflare for DNS and CDN

Analytics and tracking

Services
Supabase internal analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Supabase analytics script (ss.supabase.com)
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 no blocking or WAF challenges.
  2. Content is comprehensive and professionally presented.
  3. Strong technical implementation with modern frameworks and hosting.
  4. Security posture is strong with HTTPS and security headers but could improve DNSSEC and incident response transparency.
  5. No suspicious or malicious indicators detected.
  6. Contact information is limited to contact forms; no direct emails or phone numbers found.
  7. No explicit privacy or security policy pages linked in the main HTML but inferred from standard URLs.
Technical notes

Notes

The website is built using modern web technologies including Next.js and ReactJS, ensuring a responsive and performant user experience. Hosting and DNS are managed via Cloudflare, providing CDN and security benefits. The site uses SVG graphics extensively for logos and icons, optimizing visual quality and load times. Meta tags and Open Graph data are well implemented for SEO and social media sharing. Accessibility features such as focus-visible outlines and semantic HTML are present, contributing to usability. No CMS was detected, indicating a custom or framework-based site. Performance is fast with preloading of key assets and optimized images. Technical risks are minimal, with recommendations focusing on security enhancements and transparency.
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. 77/100 −1Low27 findingsView report
  2. 78/100Low22 findingsView report
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