CVE-2026-2504 – The Dealia WordPress plugin has an authorizatio... (How to Fix)

Q: What is the severity of CVE-2026-2504?

CVE-2026-2504 has a CVSS score of 4.3 (MEDIUM). The Dealia WordPress plugin has an authorization bypass vulnerability that allows authenticated users with Contributor-level permissions or higher to reset plugin configuration settings. This occurs because AJAX handlers verify only the admin nonce without checking if the user has administrative privileges. The vulnerability affects all WordPress sites using vulnerable versions of the plugin.

📋 TL;DR

The Dealia WordPress plugin has an authorization bypass vulnerability that allows authenticated users with Contributor-level permissions or higher to reset plugin configuration settings. This occurs because AJAX handlers verify only the admin nonce without checking if the user has administrative privileges. The vulnerability affects all WordPress sites using vulnerable versions of the plugin.

💻 Affected Systems

Products:

Dealia – Request a quote WordPress plugin

Versions: All versions up to and including 1.0.6

Operating Systems: All operating systems running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Requires WordPress installation with the vulnerable plugin enabled and at least one user with edit_posts capability (Contributor role or higher).

⚠️ 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:

Review the CVE details at NVD
Check vendor security advisories for your specific version
Test if the vulnerability is exploitable in your environment
Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Malicious contributor could reset plugin configuration, potentially disabling functionality or altering business logic, leading to service disruption or data integrity issues.

🟠

Likely Case

Contributor-level user could tamper with plugin settings, causing minor configuration changes that might affect quote request functionality.

🟢

If Mitigated

With proper user role management and minimal contributor accounts, impact would be limited to authorized administrative actions only.

🌐 Internet-Facing: MEDIUM

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: LOW

Exploitation requires authenticated access with Contributor privileges. Attack involves sending crafted AJAX requests with the exposed nonce.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.0.7 or later

Vendor Advisory: https://wordpress.org/plugins/dealia-request-a-quote/#developers

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Dealia – Request a quote' plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 1.0.7+ from WordPress plugin repository and manually update.

🔧 Temporary Workarounds

Remove Contributor Access

all

Temporarily remove edit_posts capability from Contributor role or restrict contributor accounts

Use WordPress role management plugin or custom code to modify capabilities

Disable Plugin

all

Deactivate the vulnerable plugin until patched

wp plugin deactivate dealia-request-a-quote

🧯 If You Can't Patch

Implement strict user role management with minimal contributor accounts
Monitor AJAX requests to /wp-admin/admin-ajax.php for suspicious plugin-related actions

🔍 How to Verify

Check if Vulnerable:

Check plugin version in WordPress admin → Plugins → Installed Plugins. If version is 1.0.6 or lower, system is vulnerable.

Check Version:

wp plugin list --name='dealia-request-a-quote' --field=version

Verify Fix Applied:

Verify plugin version is 1.0.7 or higher after update. Test with contributor account that AJAX handlers properly check manage_options capability.

📡 Detection & Monitoring

Log Indicators:

Unusual AJAX requests from contributor accounts to dealia plugin endpoints
Multiple plugin configuration reset attempts

Network Indicators:

POST requests to /wp-admin/admin-ajax.php with action parameters containing 'dealia' from non-admin users

SIEM Query:

source="wordpress.log" AND (uri_path="/wp-admin/admin-ajax.php") AND (user_role="contributor" OR user_role="author") AND (action="dealia_*")

📊 Metadata

CVE ID: CVE-2026-2504

CVSS v3 Score: 4.3 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CWE: CWE-862

Published: February 19, 2026

Last Updated: February 19, 2026

🔗 References

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