CVE-2026-24559 is a vulnerability identified in the CRM Perks Integration for Contact Form 7 HubSpot plugin, affecting versions up to and including 1.4.3. This plugin facilitates integration between the popular WordPress Contact Form 7 plugin and HubSpot CRM, enabling data collected via forms to be sent to HubSpot. The vulnerability allows an attacker with low privileges (PR:L) and network access (AV:N) to insert sensitive information into the data sent by the plugin and subsequently retrieve embedded sensitive data without requiring user interaction (UI:N). The flaw compromises the confidentiality and integrity of data transmitted through the plugin, potentially exposing sensitive user or business information to unauthorized parties. The vulnerability does not impact availability (A:N) and does not require elevated privileges beyond low-level access, making it easier to exploit in environments where the plugin is deployed. No known public exploits have been reported yet, but the risk remains due to the nature of the data handled by the plugin. The CVSS v3.1 base score is 5.4, indicating a medium severity level. The vulnerability is particularly relevant for organizations that rely on Contact Form 7 and HubSpot CRM integration for customer data collection and management, as it could lead to leakage or manipulation of sensitive customer information. The issue was published on January 23, 2026, and no patch links are currently available, emphasizing the need for vigilance and interim mitigations.

For European organizations, this vulnerability poses a risk of unauthorized disclosure and manipulation of sensitive customer or business data transmitted via Contact Form 7 forms integrated with HubSpot CRM. Such data leakage could lead to privacy violations under GDPR, reputational damage, and potential regulatory penalties. The integrity compromise could result in corrupted or falsified customer data within CRM systems, impacting business operations and decision-making. Since the vulnerability requires only low privileges and network access, attackers could exploit it from within the network or through compromised accounts, increasing the attack surface. Organizations heavily reliant on HubSpot for customer relationship management and using Contact Form 7 for data collection are particularly vulnerable. The lack of availability impact means service disruption is unlikely, but data confidentiality and integrity risks remain significant. This could affect sectors such as e-commerce, professional services, and marketing agencies that use these tools extensively.

1. Monitor for and apply security updates from CRM Perks promptly once a patch addressing CVE-2026-24559 is released. 2. Until a patch is available, restrict access to the WordPress admin dashboard and plugin settings to trusted personnel only, minimizing the risk of low-privilege exploitation. 3. Implement network segmentation and firewall rules to limit access to WordPress backend interfaces, reducing exposure to external attackers. 4. Conduct regular audits of data transmitted to HubSpot to detect anomalies or unauthorized data insertions. 5. Review and harden user privilege assignments in WordPress to ensure minimal necessary permissions, preventing attackers from gaining even low-level access. 6. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the plugin’s integration endpoints. 7. Educate staff about phishing and credential security to prevent account compromise that could facilitate exploitation. 8. Consider temporary disabling the integration if the risk is deemed unacceptable and no patch is available.