CVE-2026-62058 in CF7 Apps Plugin
Summary
by MITRE • 10/01/2026
Insertion of Sensitive Information Into Sent Data vulnerability in WPExperts CF7 Apps contact-form-7-honeypot allows Retrieve Embedded Sensitive Data.This issue affects CF7 Apps: from n/a through 3.7.2.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 10/01/2026
The identified security flaw represents a critical failure in data handling practices within the Contact Form 7 Honeypot plugin for WordPress, specifically affecting versions ranging from initial releases up to version 3.7.2. This vulnerability is classified as an Insertion of Sensitive Information Into Sent Data issue, which fundamentally indicates that the application fails to properly sanitize or mask sensitive information before transmitting it through external channels such as HTTP requests, email notifications, or API responses. In the context of a honeypot mechanism designed to detect and block automated spam bots, this misconfiguration is particularly ironic and dangerous because the very feature intended to protect user privacy inadvertently becomes a vector for exposing that same private data to potential attackers or unintended third parties.
From a technical perspective, the vulnerability likely stems from improper handling of form field values during the submission process. When a user submits a contact form protected by this honeypot plugin, sensitive fields such as names, email addresses, phone numbers, or even custom input containing personal identifiers are processed and subsequently included in data packets sent to the server administrator via email or logged into system files without adequate obfuscation. The flaw suggests that while the plugin may successfully intercept bot submissions based on hidden field triggers, it fails to apply necessary filtering rules to human-submitted forms before they are rendered for transmission. This results in plaintext sensitive information being embedded directly within sent data structures, bypassing standard privacy controls and encryption expectations inherent in secure web application design.
The operational impact of this vulnerability is significant from both a compliance and security standpoint. Organizations relying on WordPress sites with vulnerable versions of CF7 Apps risk violating major data protection regulations such as the General Data Protection Regulation (GDPR) or the California Consumer Privacy Act (CCPA), which mandate strict controls over how personal identifiable information is collected, processed, and transmitted. The exposure of embedded sensitive data can lead to unauthorized access by malicious actors who monitor network traffic or intercept email payloads, potentially facilitating phishing attacks, identity theft, or social engineering campaigns against site visitors. Furthermore, the leakage of internal administrative contact details contained within form submissions could expose organizational infrastructure to targeted reconnaissance activities.
This vulnerability aligns closely with Common Weakness Enumeration (CWE) category CWE-209, which describes the generation of an error message that includes sensitive information, or more broadly CWE-359 regarding exposure of private information through sent data. In terms of offensive security frameworks, this flaw relates to ATT&CK technique T1537, specifically involving Transfer Data to Cloud Account via Web Service, as it involves the unintended exfiltration of internal organizational data through standard web application communication channels. The lack of input validation and output encoding allows for a straightforward exploitation path where any attacker with network visibility or access to email logs can harvest valuable personal data without needing complex exploit code.
To mitigate this risk, immediate action is required by upgrading the CF7 Apps plugin to a version beyond 3.7.2 where these issues have presumably been addressed through improved sanitization routines and secure coding practices. Administrators should also implement server-side validation rules that ensure sensitive fields are masked or redacted before being included in email notifications or database logs. Additionally, deploying Web Application Firewalls (WAFs) with specific rule sets designed to detect and block patterns of exposed personal data can provide an additional layer of defense. Regular security audits focusing on data flow diagrams for contact forms will help ensure that no sensitive information is inadvertently transmitted outside the secure boundary of the application environment.