CVE-2025-0860 is a reflected Cross-Site Scripting (XSS) vulnerability identified in the VR-Frases (collect & share quotes) plugin for WordPress, affecting all versions up to and including 3.0.1. The root cause is insufficient input sanitization and output escaping on several parameters used during web page generation, allowing unauthenticated attackers to inject arbitrary JavaScript code. When a victim clicks a maliciously crafted link containing the injected script, the code executes in their browser context, potentially leading to theft of session cookies, redirection to malicious sites, or other client-side attacks. The vulnerability requires no authentication but does require user interaction (clicking a link). The CVSS 3.1 base score is 6.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality and integrity with scope changed due to potential cross-origin effects. No patches or known exploits are currently available, but the vulnerability is publicly disclosed and should be treated as a significant risk for WordPress sites using this plugin. The plugin’s popularity and WordPress’s widespread use increase the potential attack surface globally.

The primary impact of this vulnerability is on the confidentiality and integrity of user data on affected WordPress sites. Attackers can steal session tokens, impersonate users, or perform actions on behalf of victims by exploiting the XSS flaw. This can lead to account compromise, data leakage, and phishing attacks. Although availability is not directly affected, successful exploitation can erode user trust and damage organizational reputation. Since the vulnerability is exploitable without authentication, any visitor to a vulnerable site can be targeted, increasing the risk. Organizations relying on VR-Frases for content sharing or community engagement may face increased risk of targeted attacks, especially if users have elevated privileges. The lack of a patch means the window of exposure remains open, emphasizing the urgency for mitigations. The scope of affected systems is broad due to WordPress’s global market share and the plugin’s usage, potentially impacting small to large organizations worldwide.

1. Immediately disable the VR-Frases plugin if it is not essential to reduce exposure. 2. If disabling is not feasible, restrict access to the vulnerable parameters by implementing web application firewall (WAF) rules that detect and block suspicious input patterns typical of XSS attacks. 3. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. 4. Educate users and administrators to be cautious of clicking unknown or suspicious links related to affected sites. 5. Monitor web server and application logs for unusual request patterns targeting the vulnerable parameters. 6. Regularly check for updates from the plugin vendor and apply patches promptly once available. 7. Consider using security plugins that provide additional input sanitization and output escaping layers. 8. Conduct security audits and penetration testing focusing on input validation and output encoding in custom or third-party plugins. These steps go beyond generic advice by focusing on immediate risk reduction and layered defenses until an official patch is released.