Sensitive Data Exposure in HubSpot

Compliance Impact

The vulnerability in the HubSpot WordPress plugin allows for the exposure of sensitive data to unauthorized parties. This type of sensitive data exposure can potentially lead to non-compliance with data protection regulations such as GDPR and HIPAA, which require the protection of personal and sensitive information.

Since the vulnerability enables retrieval of embedded sensitive data, organizations using affected versions of the plugin may risk unauthorized disclosure of protected information, which could result in regulatory penalties or breaches of compliance obligations.

Immediate remediation, such as updating the plugin or applying mitigations, is recommended to reduce the risk of sensitive data exposure and maintain compliance with relevant standards.

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Executive Summary

CVE-2026-57736 is a vulnerability in the WordPress HubSpot Plugin (versions 11.3.51 and below) that allows an attacker to retrieve embedded sensitive data that should normally be restricted.

This vulnerability is classified as Sensitive Data Exposure and falls under the OWASP Top 10 category A3.

It has a CVSS score of 7.4, indicating a moderate severity where exploitation is unlikely but could allow malicious actors to view sensitive information accessible to regular users.

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Impact Analysis

This vulnerability could allow a malicious actor to access sensitive information embedded in the data sent by the HubSpot plugin, which is normally restricted.

Such exposure of sensitive data could lead to further exploitation of other weaknesses in the system.

Although the severity is considered low, the impact includes potential loss of confidentiality and integrity of sensitive information.

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Mitigation Strategies

Immediate action is recommended to mitigate this vulnerability since there is no official patch available as of the report date.

• Update the WordPress HubSpot Plugin to a version higher than 11.3.51 once a patch is released.
• Seek assistance from your hosting provider or a web developer to help secure your installation.

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