CVE-2025-58989 is a security vulnerability classified as CWE-79, which corresponds 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. Specifically, it allows an attacker to inject malicious scripts that are stored and later executed in the context of users visiting the affected web pages. The vulnerability exists in all versions up to 1.0 of the plugin. The CVSS v3.1 base score is 6.5, indicating a medium severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) reveals that the attack can be performed remotely over the network with low attack complexity, requires privileges (PR:L) and user interaction (UI:R), and impacts confidentiality, integrity, and availability to a limited extent. The scope is changed (S:C), meaning the vulnerability affects components beyond the vulnerable component itself. Stored XSS vulnerabilities allow attackers to inject malicious JavaScript code that can execute in the browsers of users who view the compromised content, potentially leading to session hijacking, defacement, or redirection to malicious sites. Since this plugin integrates with Contact Form 7, a widely used WordPress form plugin, the vulnerability could be exploited via form inputs that are not properly sanitized or escaped before being stored and rendered on web pages. No patches or fixes are currently linked, and no known exploits in the wild have been reported as of the publication date (September 9, 2025).

For European organizations using WordPress websites with the Dynamic Text Field For Contact Form 7 plugin, this vulnerability poses a significant risk. Exploitation could lead to unauthorized script execution in the browsers of site visitors or administrators, potentially resulting in theft of authentication tokens, defacement of websites, or distribution of malware. This can damage organizational reputation, lead to data breaches involving personal data protected under GDPR, and cause operational disruptions. Since the vulnerability requires some level of privilege and user interaction, attackers might target employees or trusted users to trigger the exploit. The impact on confidentiality, integrity, and availability is limited but non-negligible, especially for organizations relying on their web presence for customer interaction or e-commerce. Additionally, stored XSS can be leveraged as a foothold for further attacks, including privilege escalation or lateral movement within the network if administrative users are targeted. The lack of a patch increases the urgency for mitigation, particularly for sectors with high regulatory scrutiny such as finance, healthcare, and government services in Europe.

European organizations should immediately audit their WordPress installations to identify if the Dynamic Text Field For Contact Form 7 plugin is installed and in use. If so, they should consider the following specific steps: 1) Temporarily disable or remove the plugin until a security patch is released. 2) Implement strict input validation and output encoding on all form inputs, especially those handled by this plugin, to neutralize malicious scripts. 3) Employ Web Application Firewalls (WAFs) with custom rules to detect and block typical XSS payloads targeting this plugin. 4) Conduct thorough security awareness training for users with privileges to interact with forms, emphasizing the risks of clicking on suspicious links or submitting untrusted data. 5) Monitor web server and application logs for unusual activities or attempts to inject scripts. 6) Keep WordPress core, themes, and other plugins updated to reduce the attack surface. 7) Prepare incident response plans to quickly address any exploitation attempts. 8) Engage with the plugin vendor or community to track patch releases and apply them promptly once available.