CVE-2026-25430: Medium Vulnerability in CRM Perks Integration for Mailchimp

CVE-2026-25430 identifies a missing authorization vulnerability in the CRM Perks Integration for Mailchimp, particularly affecting versions up to 1.2.2. The flaw allows attackers to exploit incorrectly configured access control security levels, potentially leading to unauthorized access and data exposure. This vulnerability has been rated with a CVSS score of 6.5, which classifies it as medium severity, highlighting its potential impact on organizations using the affected integration.

The urgency for defenders to address this vulnerability is underscored by the potential risk to organizations, as attackers may leverage this flaw to gain unauthorized access to sensitive information. With the attack vector being network-based and the complexity of the attack deemed low, organizations should prioritize remediation efforts to prevent exploitation.

As of the last update, there is no known public exploit, and the vulnerability is currently classified as deferred. This status indicates that while the issue exists, it may not be actively exploited in the wild at this time. Nonetheless, organizations using affected versions should remain vigilant and take proactive measures to secure their systems.

Organizations should prioritize patching immediately to mitigate the risks associated with CVE-2026-25430. Regular audits and security assessments can help identify and rectify such vulnerabilities, ensuring a robust security posture.

Vulnerability Details

The official description of CVE-2026-25430 states: 'Missing Authorization vulnerability in CRM Perks Integration for Mailchimp and Contact Form 7, WPForms, Elementor, Ninja Forms cf7-mailchimp allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Integration for Mailchimp and Contact Form 7, WPForms, Elementor, Ninja Forms: from n/a through <= 1.2.2.'

The vulnerability falls under the CWE classification of CWE-862, indicating a lack of proper authorization checks. With a CVSS score of 6.5, it poses a medium risk to confidentiality, as unauthorized access could lead to exposure of sensitive data.

The attack vector is network-based, requiring low complexity and low privileges to exploit, with no user interaction necessary. The impacts on confidentiality are high, while integrity and availability are not affected.

Technical Analysis

The root cause of this vulnerability is the absence of adequate authorization mechanisms within the affected integrations. Attackers can exploit this flaw to access restricted functionalities or data without proper permissions. The attack vector being network-based allows attackers to initiate their exploits from anywhere, while the low complexity indicates that minimal technical skill is required.

Given that the privileges required to exploit this vulnerability are low, even users with minimal access can potentially exploit the flaw. Importantly, no user interaction is required, which increases the likelihood of successful exploitation.

The high confidentiality impact of this vulnerability signifies that sensitive information could be exposed to unauthorized users. However, there is no integrity or availability impact associated with this vulnerability, which means that data cannot be altered or made unavailable as a direct result of this exploit.

Risk & Impact Analysis

The real-world deployment risk associated with CVE-2026-25430 is significant, particularly for organizations utilizing the affected versions of CRM Perks Integration for Mailchimp. As attackers may leverage this vulnerability to gain unauthorized access, the potential blast radius is considerable, affecting any organization using the vulnerable software.

Organizations should assess the urgency of addressing this vulnerability based on the CVSS score of 6.5, indicating a medium severity. While it is not classified as critical, the potential for high confidentiality impact necessitates prompt action.

Given the findings from the EPSS score, which is extremely low at 0.00036, the probability of exploitation appears limited. Nonetheless, organizations should not become complacent, as the absence of an active exploit does not negate the need for remediation.

Exploitation Status

Affected Versions

The affected versions include Integration for Mailchimp and Contact Form 7, WPForms, Elementor, Ninja Forms, specifically from n/a through <= 1.2.2. Organizations should verify their installations to ensure they are not running vulnerable versions.

Mitigation & Remediation

Organizations should prioritize patching immediately to mitigate the risks associated with CVE-2026-25430. It is essential to update the affected plugins to the latest version, which addresses the authorization vulnerabilities.

If a patch is not immediately available, organizations can implement access control measures to limit exposure until an update can be applied. Additionally, configuration hardening should be conducted to ensure that access levels are appropriately set and monitored.

Organizations may also consider security assessments, such as a security assessment, to identify potential weaknesses in their applications and ensure compliance with security best practices.

Detection Guidance

Organizations should monitor logs for any unusual access patterns or unauthorized attempts to exploit the missing authorization vulnerability. Behavioral anomalies can indicate attempted exploitation, and network signatures should be updated to detect potential malicious activity.

Monitoring system changes and user access levels can also help detect unauthorized access attempts and ensure that the systems remain secure.

AppSecure Threat Intelligence Insight

CVE-2026-25430 highlights the ongoing challenges organizations face in securing integrations with third-party applications. This vulnerability represents a common pattern observed in software vulnerabilities, where insufficient authorization checks lead to security breaches.

Organizations should take this opportunity to evaluate their application security practices and consider adopting a more robust penetration testing strategy to proactively identify and remediate vulnerabilities before they can be exploited.

Furthermore, organizations can benefit from leveraging threat intelligence insights to stay informed about emerging vulnerabilities and trends in the security landscape. For instance, resources such as the vulnerability management program can help companies develop a comprehensive approach to security.

Ultimately, CVE-2026-25430 serves as a reminder of the importance of maintaining strong access controls and the need for continuous monitoring and assessment of software integrations.