CVE-2025-58636

9.8 CRITICAL

📋 TL;DR

This vulnerability allows attackers to execute arbitrary code on WordPress sites using the WP Gravity Forms Keap/Infusionsoft plugin (gf-infusionsoft) through deserialization of untrusted data. It affects all WordPress installations running vulnerable versions of this plugin. Attackers can achieve remote code execution without authentication.

💻 Affected Systems

Products:
  • WP Gravity Forms Keap/Infusionsoft (gf-infusionsoft)
Versions: All versions up to and including 1.2.3
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Affects all WordPress installations with the vulnerable plugin enabled.

⚠️ 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, website defacement, and lateral movement to other systems.

🟠

Likely Case

Remote code execution allowing attackers to create backdoors, steal sensitive data, and use the server for malicious activities.

🟢

If Mitigated

Limited impact if proper network segmentation, web application firewalls, and least privilege principles are implemented.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Deserialization vulnerabilities are commonly exploited and weaponized quickly.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.2.4 or later

Vendor Advisory: https://patchstack.com/database/Wordpress/Plugin/gf-infusionsoft/vulnerability/wordpress-wp-gravity-forms-keap-infusionsoft-plugin-1-2-3-deserialization-of-untrusted-data-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'WP Gravity Forms Keap/Infusionsoft'. 4. Click 'Update Now' if available. 5. If no update appears, manually download version 1.2.4+ from WordPress repository and replace files.

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily disable the vulnerable plugin until patching is possible.

wp plugin deactivate gf-infusionsoft

Web Application Firewall Rule

all

Block requests containing serialized PHP objects in POST data.

🧯 If You Can't Patch

  • Disable the gf-infusionsoft plugin immediately.
  • Implement strict network segmentation to isolate the vulnerable system.

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for 'WP Gravity Forms Keap/Infusionsoft' version 1.2.3 or earlier.

Check Version:

wp plugin get gf-infusionsoft --field=version

Verify Fix Applied:

Verify plugin version is 1.2.4 or later in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to WordPress admin-ajax.php or plugin endpoints
  • PHP deserialization errors in web server logs
  • Unexpected file creation in wp-content/uploads

Network Indicators:

  • HTTP POST requests with serialized data payloads to plugin-specific endpoints
  • Outbound connections from web server to unknown IPs

SIEM Query:

source="web_server_logs" AND (uri="*admin-ajax.php*" OR uri="*gf-infusionsoft*") AND method="POST" AND size>1000

🔗 References

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