CVE-2026-1235

6.5 MEDIUM

📋 TL;DR

The WP eCommerce WordPress plugin through version 3.15.1 has a PHP object injection vulnerability that allows unauthenticated attackers to execute arbitrary code on affected websites. This occurs because the plugin unserializes user-controlled input without proper validation. All WordPress sites using vulnerable versions of this plugin are affected.

💻 Affected Systems

Products:
  • WP eCommerce WordPress plugin
Versions: Through 3.15.1
Operating Systems: All operating systems running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires the plugin to be installed and activated. No special configuration needed for exploitation.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete server compromise leading to data theft, malware installation, or website defacement through remote code execution.

🟠

Likely Case

Unauthenticated attackers gain administrative access to WordPress, install backdoors, or steal sensitive data.

🟢

If Mitigated

Attack attempts are blocked by security controls, but the vulnerability remains present until patched.

🌐 Internet-Facing: HIGH - WordPress sites are typically internet-facing, and unauthenticated exploitation makes this easily accessible to attackers.
🏢 Internal Only: MEDIUM - Internal WordPress sites could still be targeted by internal threats or compromised external assets.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploitation requires a suitable gadget chain in the WordPress environment, but common WordPress components often provide these.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 3.15.2 or later

Vendor Advisory: https://wpscan.com/vulnerability/c7eb234e-3113-40db-a00d-358604d91e3f/

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP eCommerce plugin. 4. Click 'Update Now' if update available. 5. Alternatively, download latest version from WordPress repository and manually update.

🔧 Temporary Workarounds

Disable vulnerable AJAX endpoints

all

Remove or restrict access to the vulnerable ajax actions in the plugin

Add to theme's functions.php or custom plugin: remove_action('wp_ajax_nopriv_wpsc_ajax', 'wpsc_ajax'); remove_action('wp_ajax_wpsc_ajax', 'wpsc_ajax');

Disable plugin

linux

Temporarily disable the WP eCommerce plugin until patched

wp plugin deactivate wp-e-commerce

🧯 If You Can't Patch

  • Implement web application firewall (WAF) rules to block serialized object injection attempts
  • Restrict access to WordPress admin and ajax endpoints using IP whitelisting

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for WP eCommerce version 3.15.1 or earlier

Check Version:

wp plugin list --name='WP eCommerce' --field=version

Verify Fix Applied:

Confirm WP eCommerce plugin version is 3.15.2 or later in WordPress admin

📡 Detection & Monitoring

Log Indicators:

  • POST requests to /wp-admin/admin-ajax.php with 'action' parameter containing 'wpsc_ajax'
  • Unusual PHP errors related to unserialize() or object injection

Network Indicators:

  • HTTP requests with serialized PHP objects in POST data to WordPress ajax endpoints

SIEM Query:

source="web_logs" AND uri="/wp-admin/admin-ajax.php" AND (post_data="O:" OR post_data="a:" OR post_data="s:")

🔗 References

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