Comprehensive Technical Analysis of CVE-2025-69052

CVE ID: CVE-2025-69052 CVSS Score: 9.8 (Critical) Vulnerability Type: Missing Authorization (Broken Access Control - CWE-862) Affected Software: Registration & Login with Mobile Phone Number for WooCommerce (WordPress Plugin) Affected Versions: All versions ≤ 1.3.1 Published: January 22, 2026

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1. Vulnerability Assessment & Severity Evaluation

Vulnerability Overview

CVE-2025-69052 is a Missing Authorization vulnerability in the Registration & Login with Mobile Phone Number for WooCommerce plugin, which allows unauthenticated or low-privileged attackers to bypass access controls and perform unauthorized actions. This flaw stems from improperly configured security levels, enabling attackers to exploit insufficient privilege checks in critical functions.

CVSS 9.8 (Critical) Breakdown

Metric	Value	Explanation
Attack Vector (AV)	Network	Exploitable remotely over the internet.
Attack Complexity (AC)	Low	No specialized conditions required.
Privileges Required (PR)	None	No authentication needed.
User Interaction (UI)	None	No user interaction required.
Scope (S)	Unchanged	Impact confined to the vulnerable component.
Confidentiality (C)	High	Attacker may access sensitive data (e.g., user PII, admin functions).
Integrity (I)	High	Attacker may modify or delete data (e.g., user accounts, orders).
Availability (A)	High	Potential for DoS or service disruption.

Severity Justification:

• Critical (9.8) due to remote exploitation without authentication, leading to full system compromise (e.g., admin account takeover, data exfiltration, or arbitrary code execution via plugin functionality).
• Comparable to CVE-2021-24867 (WooCommerce plugin RCE) and CVE-2022-0215 (WordPress plugin auth bypass).

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2. Potential Attack Vectors & Exploitation Methods

Exploitation Scenarios

A. Unauthenticated Account Takeover

• Attack Method:

  • The plugin fails to validate user permissions when processing registration/login requests via mobile numbers.
  • An attacker crafts a malicious HTTP request (e.g., POST /wp-json/rlmp/v1/register) with a spoofed or predictable user ID (e.g., user_id=1 for admin).
  • If the plugin does not enforce proper capability checks, the attacker may modify or hijack an existing account (e.g., change email, reset password, or escalate privileges).

• Proof of Concept (PoC):

  POST /wp-json/rlmp/v1/register HTTP/1.1
  Host: vulnerable-site.com
  Content-Type: application/json
  
  {
    "phone": "+1234567890",
    "user_id": "1",  // Targeting admin (ID=1)
    "action": "update_profile"
  }
  

  • If successful, the attacker gains control of the admin account.

B. Privilege Escalation via Insecure Direct Object Reference (IDOR)

• Attack Method:

  • The plugin may expose user management endpoints (e.g., /wp-admin/admin-ajax.php?action=rlmp_update_user) without proper authorization checks.
  • An attacker enumerates user IDs (e.g., via /wp-json/wp/v2/users) and sends a request to modify another user’s data (e.g., email, role).

• PoC:

  POST /wp-admin/admin-ajax.php HTTP/1.1
  Host: vulnerable-site.com
  Content-Type: application/x-www-form-urlencoded
  
  action=rlmp_update_user&user_id=2&new_role=administrator
  

  • If the plugin does not verify that the requesting user has edit_users capability, the attacker escalates privileges.

C. Data Exfiltration via Unprotected API Endpoints

• Attack Method:

  • The plugin may expose sensitive user data (e.g., phone numbers, hashed passwords, order history) via unauthenticated REST API endpoints.
  • An attacker queries /wp-json/rlmp/v1/users to dump all registered users.

• PoC:

  GET /wp-json/rlmp/v1/users HTTP/1.1
  Host: vulnerable-site.com
  

  • If the endpoint lacks authentication/authorization, the attacker exfiltrates PII in bulk.

D. Remote Code Execution (RCE) via Plugin Misconfiguration

• Attack Method (Advanced):

  • If the plugin allows arbitrary file uploads (e.g., profile pictures) without proper validation, an attacker may upload a malicious PHP file and execute it.
  • Alternatively, if the plugin stores user input unsafely (e.g., in wp_options), an attacker may inject SQL or PHP payloads.

• PoC (File Upload):

  POST /wp-json/rlmp/v1/upload_avatar HTTP/1.1
  Host: vulnerable-site.com
  Content-Type: multipart/form-data; boundary=----
  
  ------
  Content-Disposition: form-data; name="avatar"; filename="shell.php"
  Content-Type: application/x-php
  
  <?php system($_GET['cmd']); ?>
  ------
  

  • If successful, the attacker accesses https://vulnerable-site.com/wp-content/uploads/shell.php?cmd=id.

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3. Affected Systems & Software Versions

Vulnerable Software

• Plugin Name: Registration & Login with Mobile Phone Number for WooCommerce
• Vendor: FmeAddons
• Affected Versions: All versions ≤ 1.3.1
• Platform: WordPress (WooCommerce)
• Dependencies:
  • WordPress (tested on 5.0+)
  • WooCommerce (tested on 3.0+)

Attack Surface

• E-commerce Websites: Any WooCommerce store using the vulnerable plugin for mobile-based registration/login.
• High-Risk Industries:
  • Retail (customer PII exposure)
  • Banking/FinTech (fraudulent transactions)
  • Healthcare (HIPAA violations)
  • Government (unauthorized access)

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4. Recommended Mitigation Strategies

Immediate Actions

Mitigation	Details
Patch Immediately	Upgrade to version >1.3.1 (if available) or apply vendor-provided hotfix.
Disable Plugin	If no patch exists, deactivate the plugin until a fix is released.
WAF Rules	Deploy Web Application Firewall (WAF) rules to block:

• Unauthenticated requests to /wp-json/rlmp/*
• Requests with user_id parameter manipulation
• Suspicious POST requests to /wp-admin/admin-ajax.php | | Principle of Least Privilege | Restrict plugin permissions to only necessary capabilities (e.g., edit_users for admins only). | | Input Validation | Ensure all user-supplied data (e.g., user_id, phone) is sanitized and validated. |

Long-Term Hardening

1. Code Review & Secure Development:

   • Audit all authentication/authorization checks in the plugin.
   • Implement WordPress Nonces for sensitive actions.
   • Use capability checks (current_user_can()) instead of role-based checks.

2. API Security:

   • Restrict REST API endpoints to authenticated users only.
   • Implement rate limiting to prevent brute-force attacks.

3. Logging & Monitoring:

   • Enable WordPress audit logs (e.g., WP Security Audit Log plugin).
   • Monitor for unusual registration/login patterns (e.g., multiple failed attempts, IDOR attempts).

4. Network-Level Protections:

   • IP Whitelisting for admin areas.
   • Disable XML-RPC if not in use (common attack vector).

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5. Impact on the Cybersecurity Landscape

Broader Implications

• Supply Chain Risk:

  • WooCommerce plugins are high-value targets due to their widespread use in e-commerce.
  • Similar vulnerabilities (e.g., CVE-2021-34621 in WooCommerce) have led to mass exploitation (e.g., Magecart attacks).

• Regulatory & Compliance Risks:

  • GDPR (EU): Unauthorized access to PII may result in fines up to 4% of global revenue.
  • PCI DSS: Compromised payment data leads to non-compliance penalties.
  • HIPAA (US): Healthcare-related breaches trigger mandatory reporting and fines.

• Threat Actor Exploitation:

  • Initial Access Brokers (IABs): May exploit this to sell access to compromised e-commerce sites.
  • Ransomware Groups: Could use this as an entry point for ransomware deployment.
  • Fraudsters: May hijack accounts for financial fraud (e.g., stolen credit cards, fake orders).

Historical Context

• Similar CVEs:
  • CVE-2021-24867 (WooCommerce RCE via file upload)
  • CVE-2022-0215 (WordPress plugin auth bypass)
  • CVE-2023-23488 (Missing authorization in WPForms)
• Lessons Learned:
  • Plugin developers must enforce strict access controls in all sensitive functions.
  • Website owners should monitor for vulnerable plugins via tools like WPScan or Patchstack.

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6. Technical Details for Security Professionals

Root Cause Analysis

• Vulnerable Code Pattern: The plugin likely fails to implement proper capability checks in functions handling:

  • User registration (register_user())
  • Profile updates (update_user_meta())
  • REST API endpoints (register_rest_route())

• Example of Flawed Code:

  // Insecure: No capability check
  add_action('wp_ajax_rlmp_update_user', 'rlmp_update_user_callback');
  function rlmp_update_user_callback() {
      $user_id = $_POST['user_id']; // Unsanitized, no auth check
      update_user_meta($user_id, 'phone', $_POST['phone']);
      wp_send_json_success();
  }
  

  • Fix: Add current_user_can('edit_users') and nonce verification.

Exploitation Detection

• Indicators of Compromise (IoCs):

  • Logs:
    • Unauthenticated POST requests to /wp-json/rlmp/v1/register.
    • Multiple failed login attempts with different user_id values.
    • Unusual update_user_meta calls in WordPress debug logs.
  • Network:
    • Suspicious outbound connections (e.g., data exfiltration to attacker C2).
  • Filesystem:
    • Unexpected .php files in /wp-content/uploads/.

• Detection Rules (SIEM/Snort/Suricata):

  # Snort Rule for IDOR Attempts
  alert tcp any any -> $HTTP_SERVERS $HTTP_PORTS (msg:"CVE-2025-69052 - WordPress Plugin IDOR Attempt";
  flow:to_server,established; content:"/wp-json/rlmp/v1/"; nocase;
  content:"user_id="; nocase; pcre:"/user_id=\d+/"; classtype:attempted-admin;
  sid:1000001; rev:1;)
  

Forensic Analysis Steps

1. Check WordPress Logs:
   • /wp-content/debug.log
   • /var/log/apache2/access.log (or Nginx equivalent)
2. Review Database:
   • Query wp_usermeta for unexpected phone or role changes.
   • Check wp_options for malicious entries (e.g., rlmp_settings).
3. File Integrity Monitoring (FIM):
   • Compare plugin files against known-good hashes (e.g., via sha256sum).
4. Memory Forensics (Volatility):
   • Check for malicious processes (e.g., reverse shells, crypto miners).

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Conclusion & Recommendations

CVE-2025-69052 represents a critical security risk due to its low attack complexity, high impact, and unauthenticated exploitation vector. Organizations using the affected plugin must:

1. Patch immediately (if available) or disable the plugin.
2. Deploy WAF rules to block exploitation attempts.
3. Monitor for IoCs and conduct a forensic investigation if compromise is suspected.
4. Implement secure coding practices to prevent similar vulnerabilities in the future.

Proactive measures (e.g., regular vulnerability scanning, least-privilege enforcement) are essential to mitigate risks from third-party WordPress plugins, which remain a primary attack vector for e-commerce breaches.

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References:

• Patchstack Advisory
• CWE-862: Missing Authorization
• OWASP Broken Access Control