What’s Vulnerable › Vulnerabilities

CVE-2024-13820: Melhor Envio <= 2.15.11 - Unauthenticated Sensitive Information Exposure via Hardcoded Hash

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-08 · updated 2026-06-17
• Weakness: CWE-200

Description

The Melhor Envio plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.15.11 via the 'run' function, which uses a hardcoded hash. This makes it possible for unauthenticated attackers to extract sensitive data including environment information, plugin tokens, shipping configurations, and limited vendor information.

Affected products

• melhorenvio Melhor Envio: through 2.15.11

References

• https://github.com/melhorenvio/wp-melhorenvio-v2/blob/6e2f5bb01c536df9fc84534eb8a27ec99d9601af/Services/TestService.php
• https://plugins.trac.wordpress.org/browser/melhor-envio-cotacao/trunk/Services/TestService.php#L20
• https://plugins.trac.wordpress.org/browser/melhor-envio-cotacao/trunk/Services/TestService.php#L30
• https://plugins.trac.wordpress.org/changeset/3274912/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/a8f093bc-5cd3-41a0-b86b-d00338334d2e?source=cve

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