CVE-2026-25368

6.5 MEDIUM

📋 TL;DR

This CVE describes a Missing Authorization vulnerability in the Calculated Fields Form WordPress plugin that allows attackers to bypass access controls. It affects all versions up to and including 5.4.4.1, potentially enabling unauthorized access to restricted functionality. WordPress sites using this plugin are vulnerable.

💻 Affected Systems

Products:
  • Calculated Fields Form WordPress Plugin
Versions: All versions through 5.4.4.1
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Affects WordPress installations with the Calculated Fields Form plugin installed and activated.

⚠️ 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

Attackers could modify form data, access sensitive information submitted through forms, or manipulate form behavior to compromise site integrity.

🟠

Likely Case

Unauthorized users could access or modify form submissions, potentially exposing PII or other sensitive data collected through forms.

🟢

If Mitigated

With proper authorization checks, only authenticated users with appropriate permissions could access form functionality.

🌐 Internet-Facing: HIGH - WordPress sites are typically internet-facing, and the vulnerability allows unauthenticated exploitation.
🏢 Internal Only: MEDIUM - Internal WordPress installations could still be vulnerable if accessed by malicious insiders or compromised accounts.

🎯 Exploit Status

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

Missing authorization vulnerabilities are typically easy to exploit once discovered, and WordPress plugins are common targets.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 5.4.4.2 or later

Vendor Advisory: https://patchstack.com/database/Wordpress/Plugin/calculated-fields-form/vulnerability/wordpress-calculated-fields-form-plugin-5-4-4-1-broken-access-control-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Calculated Fields Form' and check for updates. 4. Update to version 5.4.4.2 or later. 5. Verify the update completed successfully.

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily disable the vulnerable plugin until patched

wp plugin deactivate calculated-fields-form

Restrict Access

all

Implement web application firewall rules to restrict access to plugin endpoints

🧯 If You Can't Patch

  • Implement strict network segmentation to isolate the WordPress instance
  • Deploy a WAF with rules specifically blocking unauthorized access to plugin endpoints

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins for Calculated Fields Form version

Check Version:

wp plugin get calculated-fields-form --field=version

Verify Fix Applied:

Verify plugin version is 5.4.4.2 or higher in WordPress admin

📡 Detection & Monitoring

Log Indicators:

  • Unauthorized access attempts to /wp-content/plugins/calculated-fields-form/ endpoints
  • 403 errors followed by successful 200 responses to plugin URLs

Network Indicators:

  • Unusual traffic patterns to plugin-specific endpoints from unauthenticated sources

SIEM Query:

source="wordpress.log" AND (uri_path="/wp-content/plugins/calculated-fields-form/" OR plugin="calculated-fields-form") AND response_code=200 AND user="-"

🔗 References

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