CVE-2025-60224

9.8 CRITICAL

📋 TL;DR

This CVE describes a PHP object injection vulnerability in the WordPress Subscribe to Download plugin. Attackers can exploit insecure deserialization to execute arbitrary code, potentially compromising the entire WordPress site. All WordPress sites running vulnerable plugin versions (≤2.0.9) are affected.

💻 Affected Systems

Products:
  • WordPress Subscribe to Download plugin
Versions: n/a through ≤2.0.9
Operating Systems: All platforms running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: All WordPress installations with vulnerable plugin versions are affected regardless of configuration.

⚠️ 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

Full remote code execution leading to complete site takeover, data theft, malware deployment, and server compromise.

🟠

Likely Case

Unauthenticated attackers achieve remote code execution, install backdoors, deface sites, or steal sensitive data.

🟢

If Mitigated

With proper WAF rules and security monitoring, exploitation attempts are blocked and detected before damage occurs.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

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

Public exploit details exist, making this easily weaponizable by attackers with basic skills.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 2.1.0 or later

Vendor Advisory: https://patchstack.com/database/Wordpress/Plugin/subscribe-to-download/vulnerability/wordpress-subscribe-to-download-plugin-2-0-9-php-object-injection-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Subscribe to Download'. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin immediately.

🔧 Temporary Workarounds

Disable vulnerable plugin

all

Temporarily disable the Subscribe to Download plugin until patched version is available

wp plugin deactivate subscribe-to-download

WAF rule for deserialization attacks

all

Add web application firewall rule to block PHP object injection attempts

🧯 If You Can't Patch

  • Immediately deactivate and remove the Subscribe to Download plugin from all WordPress sites
  • Implement strict WAF rules to block deserialization attempts and monitor for exploitation attempts

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin → Plugins → Installed Plugins → Subscribe to Download version. If version ≤2.0.9, you are vulnerable.

Check Version:

wp plugin get subscribe-to-download --field=version

Verify Fix Applied:

After update, verify plugin version is ≥2.1.0 in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to plugin endpoints
  • PHP deserialization errors in logs
  • Unexpected file creation in wp-content/uploads

Network Indicators:

  • HTTP requests containing serialized PHP objects
  • Traffic to known exploit patterns for this CVE

SIEM Query:

source="wordpress.log" AND ("subscribe-to-download" OR "CVE-2025-60224") AND ("deserialization" OR "unserialize" OR "object injection")

🔗 References

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