CVE-2025-62124 is a stored Cross-site Scripting (XSS) vulnerability classified under CWE-79, found in the Soli WP Post Signature plugin for WordPress, affecting versions up to 0.4.1. The vulnerability stems from improper neutralization of user input during web page generation, allowing malicious scripts to be stored and later executed in the context of users visiting the affected site. The CVSS 3.1 base score is 5.9 (medium severity), with an attack vector of network (remote exploitation), low attack complexity, but requiring high privileges and user interaction. The scope is changed, indicating that exploitation can affect components beyond the vulnerable plugin itself. Successful exploitation can lead to partial compromise of confidentiality (e.g., theft of cookies or session tokens), integrity (e.g., content manipulation), and availability (e.g., script-induced disruptions). No patches or known exploits are currently available, but the vulnerability is publicly disclosed. The plugin is used in WordPress environments, which are widely deployed across Europe, especially in small to medium enterprises and personal websites. The vulnerability requires an attacker to have high privileges (likely an authenticated user with elevated rights) and to trick a user into interacting with malicious content, which may limit exploitation but still poses a significant risk in compromised or insider threat scenarios.

For European organizations, this vulnerability poses a moderate risk primarily to websites using the Soli WP Post Signature plugin. Exploitation could allow attackers to execute arbitrary scripts in the browsers of users with access to the affected site, potentially leading to session hijacking, defacement, or further attacks such as phishing. Organizations relying on WordPress for public-facing or internal sites could face reputational damage, data leakage, or disruption of services. The requirement for high privileges and user interaction reduces the likelihood of widespread automated exploitation but does not eliminate risk, especially in environments with multiple users or where insider threats exist. Given the widespread use of WordPress in Europe, especially in countries with strong digital economies and active web development sectors, the impact could be significant if exploited at scale or in targeted attacks against critical infrastructure or high-value targets.

1. Immediately audit WordPress installations to identify the presence of the Soli WP Post Signature plugin and its version. 2. Disable or uninstall the plugin if it is not essential to reduce attack surface. 3. If the plugin is required, restrict access to high privilege roles and enforce the principle of least privilege to limit potential attackers. 4. Implement strict input validation and output encoding on all user-generated content, especially in areas handled by the plugin. 5. Monitor logs and user activity for suspicious behavior indicative of attempted XSS exploitation. 6. Educate users about the risks of interacting with untrusted content and phishing attempts that could trigger the vulnerability. 7. Stay alert for vendor updates or patches and apply them promptly once available. 8. Consider deploying Web Application Firewalls (WAFs) with rules to detect and block XSS payloads targeting this plugin. 9. Conduct regular security assessments and penetration testing focusing on WordPress plugins and custom code.