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Security report for contentstack.io

Contentstack Inc. · Technology · N/a

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

Security score

82/100

Risk levelLow

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

Contentstack Inc. operates a leading adaptive digital experience platform that integrates AI-driven content management with real-time customer data to deliver personalized experiences across multiple digital channels. Positioned as an enterprise SaaS provider, Contentstack targets developers, IT professionals, business users, and digital leaders with a comprehensive suite of services including headless CMS, real-time data insights, omnichannel personalization, and front-end hosting. The company showcases strong market presence with reputable clients and a professional, content-rich website. Technically, the website leverages modern frameworks such as Next.js and React, integrates third-party SDKs for personalization and analytics, and employs cookie consent mechanisms to ensure privacy compliance. The site is fast, mobile-optimized, and accessible, reflecting a mature digital infrastructure. From a security perspective, Contentstack enforces HTTPS, implements key security headers, and maintains privacy and cookie policies aligned with GDPR. No critical vulnerabilities or exposed sensitive data were detected. However, explicit security policies and incident response information are not publicly detailed, representing an area for improvement. Overall, the website and business exhibit high professionalism, trustworthiness, and technical sophistication, with a low risk profile. Strategic recommendations include enhancing transparency around security policies and vulnerability disclosures to further strengthen trust and compliance.

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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

  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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching contentstack.io

This scan found 13 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

Email alerts on material changes and an exportable JSON history of every change.

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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
75
Security headers
75
Email security
82
DNS health
85
Network security
100
GDPR outside view
73
Average
82

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

Contentstack holds a strong position in the technology sector as a provider of headless CMS and digital experience platforms. Its business model is SaaS-based, focusing on enterprise clients requiring scalable, flexible content management and personalization solutions. The company benefits from a robust partnership ecosystem and showcases multiple high-profile case studies, indicating strong market traction and customer satisfaction. Revenue streams likely derive from subscription plans and enterprise licensing. The target customer segments include developers, IT teams, business users, and digital leaders seeking modern content management and personalization capabilities. Growth indicators include active community engagement, frequent product updates, and a comprehensive resource center. Strategically, Contentstack should continue expanding its partner network, enhance security transparency, and maintain innovation in AI-driven personalization to sustain competitive advantage.

Security posture

Contentstack demonstrates a mature security posture with enforced HTTPS, comprehensive security headers, and GDPR-compliant privacy and cookie policies. The absence of exposed sensitive data and the use of consent mechanisms reflect good data protection practices. However, the lack of publicly available security policies, incident response plans, and vulnerability disclosure channels suggests room for improvement in transparency and incident readiness. No critical vulnerabilities were identified in the website content or scripts. The company should consider publishing a security policy and establishing a vulnerability disclosure program to align with best practices and enhance stakeholder trust. Overall, the security maturity is high but could be elevated by formalizing and publicizing security governance and incident response details.

Recommendations

  1. Publish a dedicated security policy page detailing security frameworks, controls, and governance.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Provide contact information for a Data Protection Officer or security team to improve transparency and compliance.
  4. Enhance incident response readiness by sharing procedures or contacts for security incidents.
  5. Maintain and regularly update privacy and cookie policies to reflect evolving regulations and best practices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Contentstack Inc.
Description
The world’s first adaptive digital experience platform — AI-driven content plus real-time customer data for personalized experiences like never before. Contentstack EDGE turns customer insights into truly personalized experiences across all of your brand’s digital channels at the exact moment customers need them.
Key services
Headless Content Management, Real-time Data and Insights, Omnichannel Personalization, Agents & Automations, Front-end Hosting
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, JavaScript, Personalize Edge SDK, Google Tag Manager, CookiePro Consent SDK
Frameworks
Next.js
Platforms
Contentstack platform
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • Cookie consent mechanism
  • No exposed sensitive data detected

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
CookiePro
Transparency
good

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 no blocking mechanisms
  2. Strong focus on enterprise digital experience platform and headless CMS
  3. Multiple customer case studies with reputable brands
  4. Comprehensive footer with legal, social, and resource links
  5. Use of modern web technologies and frameworks
  6. Cookie consent and privacy policy present indicating GDPR compliance
  7. No exposed sensitive data or security issues detected in HTML content
Technical notes

Notes

The website is built on a modern technology stack including React and Next.js, enabling server-side rendering and optimized performance. Integration with personalization SDKs and Google Tag Manager indicates advanced marketing and analytics capabilities. The site is mobile-optimized, accessible, and SEO-friendly with proper meta tags and Open Graph data. No technical debt or deprecated libraries were detected in the analyzed content. Hosting details are not explicitly disclosed but the performance and security headers suggest a reputable hosting environment. Opportunities exist to further enhance technical transparency by disclosing hosting providers and security certifications.
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 +13Low25 findingsView report
  2. 63/100Medium25 findingsView report
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