CVE-2025-49293

Executive Summary

CVE-2025-49293 is a Missing Authorization vulnerability in the WordPress plugin Crawlomatic Multisite Scraper Post Generator (versions ≤ 2.6.8.2). This flaw allows an unauthenticated attacker to exploit incorrectly configured access control security levels, potentially leading to unauthorized data access or manipulation. The vulnerability resides in the WordPress ecosystem and is not related to Apache or Nginx. The vendor, CodeRevolution, has not released a patch, and no public proof-of-concept (PoC) or exploit code is available at this time. The EPSS score is 0.0%, indicating low exploitation likelihood in the wild, but the risk remains due to the lack of a patch.

Supply Chain & Package Security

This is a WordPress plugin vulnerability. Users should monitor the WordPress plugin repository for updates and consider disabling the plugin until a patch is available. No NPM, PyPI, Go, or Ruby packages are affected.

CVSS Breakdown & Threat Level

• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
• Base Score: 4.3 (Medium)
• Attack Vector: Network (AV:N) – Exploitable remotely.
• Attack Complexity: Low (AC:L) – No special conditions required.
• Privileges Required: None (PR:N) – No authentication needed.
• User Interaction: None (UI:N) – No user action required.
• Scope: Unchanged (S:U) – Vulnerability affects only the vulnerable component.
• Confidentiality Impact: Low (C:L) – Limited information disclosure.
• Integrity Impact: None (I:N) – No data modification.
• Availability Impact: None (A:N) – No denial of service.

Threat Level: Medium. The vulnerability is easy to exploit but has limited impact. However, the lack of a patch increases the risk for unmonitored installations.

Deep Dive & Mechanics

The vulnerability is a Missing Authorization (CWE-862) issue in the Crawlomatic Multisite Scraper Post Generator plugin. The plugin likely fails to properly enforce access controls on certain AJAX actions or REST API endpoints, allowing unauthenticated users to trigger functions that should require administrative privileges. This could enable an attacker to:

• Access or modify plugin settings.
• Retrieve scraped data or configuration details.
• Trigger scraping operations without authorization.

The flaw is present in all versions up to and including 2.6.8.2. Since no patch is available, the exact vulnerable code path is unknown, but typical patterns include missing current_user_can() checks in WordPress hooks or REST API callbacks.

Vulnerable vs. Patched Code

Since no patch exists, a hypothetical fix would involve adding capability checks to all plugin endpoints. Example:

Vulnerable Code (hypothetical):

add_action('wp_ajax_nopriv_crawlomatic_scrape', 'crawlomatic_handle_scrape');
function crawlomatic_handle_scrape() {
    // No authorization check
    $url = $_POST['url'];
    // Perform scraping...
}

Patched Code (hypothetical):

add_action('wp_ajax_crawlomatic_scrape', 'crawlomatic_handle_scrape');
function crawlomatic_handle_scrape() {
    if (!current_user_can('manage_options')) {
        wp_die('Unauthorized');
    }
    $url = $_POST['url'];
    // Perform scraping...
}

The patch would require authentication and appropriate user capabilities for all sensitive actions.

Exploitation & Lab Setup

Red Team (Attack Simulation)

Since no public exploit exists, a penetration tester would need to reverse-engineer the plugin to identify unauthenticated endpoints. Steps:

1. Identify Plugin Endpoints: Use a tool like Burp Suite or WPScan to enumerate AJAX actions and REST API routes.
2. Test for Missing Authorization: Send requests to endpoints without authentication and observe responses.
3. Craft Exploit: If an endpoint is found, craft a simple HTTP request to trigger the unauthorized action.

Example Request (hypothetical):

POST /wp-admin/admin-ajax.php HTTP/1.1
Host: target-site.com
Content-Type: application/x-www-form-urlencoded

action=crawlomatic_scrape&url=http://evil.com/data

Blue Team (Defense & Detection)

• Monitor Logs: Look for unusual AJAX requests to admin-ajax.php with actions related to Crawlomatic.
• Web Application Firewall (WAF): Block requests to unknown or suspicious AJAX actions.
• Plugin Hardening: Disable the plugin until a patch is available. If necessary, restrict access to plugin pages via .htaccess or server-level rules.

Example .htaccess rule to block unauthenticated access:

<FilesMatch "admin-ajax\.php">
    Require all denied
    Require ip 127.0.0.1
</FilesMatch>

Indicators of Compromise (IOCs)

• File Hashes: (None available – no known malicious files)
• Network Patterns: HTTP requests to /wp-admin/admin-ajax.php with action=crawlomatic_* parameters from unauthenticated sources.
• Log Entries: WordPress debug logs showing failed capability checks or unexpected AJAX calls.
• Plugin Version: Crawlomatic Multisite Scraper Post Generator version ≤ 2.6.8.2.

Detection Engineering

YARA Rule

rule CVE_2025_49293_Crawlomatic_Missing_Auth {
    meta:
        description = "Detects Crawlomatic plugin files with missing authorization"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-49293"
    strings:
        $vuln_func = "wp_ajax_nopriv_" nocase
        $plugin_slug = "crawlomatic-multipage-scraper-post-generator" nocase
    condition:
        $plugin_slug and $vuln_func
}

Sigma Rule

title: CVE-2025-49293 - Crawlomatic Missing Authorization
id: 7a8b9c0d-1e2f-3a4b-5c6d-7e8f9a0b1c2d
status: experimental
description: Detects unauthenticated AJAX requests to Crawlomatic plugin endpoints
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: 'POST'
        c-uri|contains: '/wp-admin/admin-ajax.php'
        cs-uri-query|contains: 'action=crawlomatic_'
    condition: selection
falsepositives:
    - Legitimate admin actions (if authenticated)
level: medium

Suricata Rule

alert http any any -> any any (
    msg:"CVE-2025-49293 - Crawlomatic Missing Authorization Attempt";
    flow:to_server;
    content:"POST"; http_method;
    content:"/wp-admin/admin-ajax.php"; http_uri;
    content:"action=crawlomatic_"; http_client_body;
    classtype:attempted-recon;
    sid:1000001;
    rev:1;
)

Remediation & Mitigation

1. Immediate Action: Disable the Crawlomatic Multisite Scraper Post Generator plugin until a patch is released.
2. Monitor for Updates: Check the WordPress plugin repository regularly for a patched version.
3. Web Application Firewall (WAF): Deploy rules to block unauthenticated AJAX requests containing action=crawlomatic_*.
4. Access Control Hardening: Implement server-level restrictions on admin-ajax.php to require authentication for all actions.
5. Incident Response: If exploitation is suspected, review access logs for unauthorized AJAX calls and investigate potential data exposure.

Valters IT
Securing Digital Frontiers