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Security report for mercadopago.com

MercadoLibre S.R.L. · Finance · Argentina

Low risk. 5 critical or high findings in Security headers and GDPR outside view.

Security score

81/100

Risk levelLow

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

Mercado Pago is a leading digital payments platform operating primarily in Latin America, with a strong presence in Argentina. It offers a comprehensive suite of financial services including digital accounts, prepaid Mastercard cards, money transfers, payment of services, loans, and seller tools such as Point devices and QR code payments. The platform is integrated with its parent company MercadoLibre, a major e-commerce player in the region, positioning Mercado Pago as a critical enabler of digital commerce and financial inclusion. Technically, the website leverages modern web technologies, including React-based frameworks, New Relic for performance monitoring, and Google Tag Manager for analytics and marketing. The SSL configuration is robust with a valid certificate and HSTS enabled, although DNSSEC is not enabled and CAA records appear misconfigured. No critical vulnerabilities were detected, but there is room for improvement in DNS security and explicit vulnerability disclosure. Overall, Mercado Pago demonstrates a mature digital infrastructure and a strong security posture, supporting its role as a trusted financial services provider.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 100 · Critical
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

5 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 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

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, LinkedIn, YouTube, Google Ads

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching mercadopago.com

This scan found 10 issues across 4 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
100
Security headers
70
Email security
100
DNS health
90
Network security
100
GDPR outside view
25
Average
81

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

Mercado Pago operates as a subsidiary of MercadoLibre, focusing on financial services and digital payments. Its business model revolves around providing seamless payment solutions for consumers and businesses, facilitating transactions within the MercadoLibre ecosystem and beyond. The company targets a broad audience including individual consumers, small and medium businesses, and large sellers. Revenue streams include transaction fees, credit products, and value-added services like insurance and promotional materials. The platform's integration with MercadoLibre enhances its competitive advantage by leveraging a large user base and extensive merchant network. Strategic partnerships with financial institutions and marketing affiliates further strengthen its market position. The website content and navigation clearly reflect a customer-centric approach, emphasizing ease of use and accessibility.

Security posture

Mercado Pago exhibits a strong security posture with a valid SSL certificate issued by Amazon RSA 2048 M02 and strict transport security policies including HSTS with preload and subdomain inclusion. The absence of known SSL vulnerabilities such as Heartbleed, POODLE, FREAK, and Logjam indicates adherence to best practices. DNS records include SPF for email authentication, but DNSSEC is not enabled, which is a potential area for enhancement. CAA records are enabled but appear undefined, suggesting a need for configuration review. The website lacks explicit public security policies or incident response contacts, which could be improved to enhance transparency and trust. Overall, the security measures in place support secure user interactions and data protection, aligning with regulatory compliance such as GDPR.

Recommendations

  1. Enable DNSSEC to strengthen DNS integrity and prevent spoofing attacks.
  2. Correct and define CAA DNS records to restrict certificate issuance to authorized CAs.
  3. Publish a security.txt file to facilitate responsible vulnerability disclosure.
  4. Provide clear incident response contact information on the website.
  5. Review TLS protocol support to ensure modern and secure versions like TLS 1.2 or TLS 1.3 are enabled.

Contact details published on the site

Addresses
Legal name
MercadoLibre S.R.L.
Technical notes

Notes

The website is built on a modern React-based framework (Nordic Webkit) with extensive use of JavaScript for dynamic content and user interaction. Performance monitoring is implemented via New Relic, and analytics are handled through Google Analytics, Melidata, and Google Tag Manager. Hosting is provided by Amazon AWS, ensuring scalability and reliability. The site employs lazy loading for images and uses IntersectionObserver for performance optimization. Despite a large page size and resource count, the site maintains good mobile optimization and accessibility standards. SEO is well addressed with appropriate metadata and Open Graph tags. Some performance metrics indicate slow load times, suggesting opportunities for optimization. The technical stack and infrastructure reflect a mature and well-maintained digital platform capable of supporting enterprise-level operations.
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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