CVE-2025-58989 is a medium severity vulnerability classified under CWE-79, which pertains to Improper Neutralization of Input During Web Page Generation, commonly known as Cross-site Scripting (XSS). This vulnerability affects the WordPress plugin 'Dynamic Text Field For Contact Form 7' developed by silverplugins217. The flaw allows an attacker to inject malicious scripts that are stored persistently (Stored XSS) within the plugin's input fields. When a legitimate user or administrator views the affected page, the malicious script executes in their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed with the victim's privileges. The CVSS 3.1 base score is 6.5, indicating a medium level of severity. The vector string (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) shows that the attack can be performed remotely over the network with low attack complexity, requires low privileges, and user interaction is needed. The vulnerability impacts confidentiality, integrity, and availability to a limited extent but can cause significant damage if exploited in environments where the plugin is used. No patches or fixes have been published yet, and no known exploits are currently in the wild. The vulnerability affects all versions of the plugin up to 1.0, with no specific version range provided. Since the plugin integrates with Contact Form 7, a widely used WordPress form plugin, the attack surface includes websites using this combination for contact forms or data collection.

For European organizations, especially those relying on WordPress websites with Contact Form 7 and the Dynamic Text Field plugin, this vulnerability poses a risk of persistent XSS attacks. Such attacks can lead to unauthorized access to user sessions, theft of sensitive data, defacement of websites, or distribution of malware to site visitors. This can damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR breaches if personal data is compromised), and cause operational disruptions. Organizations in sectors like e-commerce, government, healthcare, and finance, which often use WordPress for public-facing sites, are particularly vulnerable. The cross-site scripting can also be leveraged as a stepping stone for more advanced attacks, including privilege escalation or lateral movement within internal networks if administrative users are targeted. Given the medium severity and the requirement for low privileges but user interaction, the threat is moderate but should not be underestimated, especially in high-profile or high-traffic websites.

1. Immediate mitigation should include disabling or removing the Dynamic Text Field For Contact Form 7 plugin until a security patch is released. 2. Implement strict input validation and output encoding on all user-supplied data fields to prevent script injection. 3. Use Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts on web pages. 4. Monitor web server logs and application logs for unusual input patterns or repeated attempts to exploit XSS vulnerabilities. 5. Educate website administrators and users about the risks of clicking on suspicious links or interacting with untrusted content. 6. Regularly update all WordPress plugins and core installations to their latest versions once patches are available. 7. Employ Web Application Firewalls (WAF) with rules specifically targeting XSS attack patterns to provide an additional layer of defense. 8. Conduct security audits and penetration testing focusing on input handling and script injection vectors in the affected web applications.