CVE-2024-56242

6.5 MEDIUM

📋 TL;DR

This stored cross-site scripting (XSS) vulnerability in the Tyche Softwares Arconix Shortcodes WordPress plugin allows attackers to inject malicious scripts into web pages, which execute when users view those pages. It affects WordPress sites using the plugin from any version up to 2.1.14, potentially compromising user sessions or defacing sites.

💻 Affected Systems

Products:
  • Tyche Softwares Arconix Shortcodes WordPress plugin
Versions: n/a through 2.1.14
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Affects all WordPress installations with the vulnerable plugin versions enabled; no special configuration required.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal admin credentials, take over the WordPress site, or redirect users to malicious sites, leading to full site compromise and data theft.

🟠

Likely Case

Attackers inject malicious scripts to deface pages, steal user session cookies, or perform actions on behalf of users, causing reputational damage and potential account hijacking.

🟢

If Mitigated

With proper input validation and output encoding, the risk is minimized, but unpatched systems remain vulnerable to exploitation if attackers gain access to input fields.

🌐 Internet-Facing: HIGH, as WordPress sites are typically internet-facing, allowing remote attackers to exploit the vulnerability if they can inject malicious input.
🏢 Internal Only: LOW, as the plugin is for WordPress, which is rarely used solely internally; exploitation would require internal attacker access or compromised internal systems.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploitation likely requires authenticated access to input fields, but details are not publicly disclosed; stored XSS typically has low complexity once the injection point is identified.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 2.1.15 or later

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/arconix-shortcodes/vulnerability/wordpress-arconix-shortcodes-plugin-2-1-14-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Go to Plugins > Installed Plugins. 3. Find 'Arconix Shortcodes' and update to version 2.1.15 or later. 4. Verify the update completes successfully.

🔧 Temporary Workarounds

Disable the plugin

all

Temporarily deactivate the Arconix Shortcodes plugin to prevent exploitation until patching is possible.

wp plugin deactivate arconix-shortcodes

Implement WAF rules

all

Configure a web application firewall to block XSS payloads targeting the plugin's input fields.

🧯 If You Can't Patch

  • Restrict access to the WordPress admin panel to trusted IP addresses only.
  • Monitor for unusual activity in WordPress logs and user inputs related to shortcodes.

🔍 How to Verify

Check if Vulnerable:

Check the plugin version in WordPress admin under Plugins > Installed Plugins; if version is 2.1.14 or lower, it is vulnerable.

Check Version:

wp plugin get arconix-shortcodes --field=version

Verify Fix Applied:

After updating, confirm the plugin version is 2.1.15 or higher in the same location.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to WordPress admin-ajax.php or other endpoints with script tags in parameters
  • User inputs containing JavaScript code in shortcode-related fields

Network Indicators:

  • HTTP requests with XSS payloads targeting the plugin's endpoints
  • Unexpected redirects or script loads from the site

SIEM Query:

source="wordpress.log" AND ("arconix" OR "shortcode") AND ("script" OR "onerror" OR "javascript:")

🔗 References

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