CVE-2025-8342

High

Published: 15 August 2025

Published

15 August 2025

Modified

15 April 2026

KEV Added

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Patch

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CVSS Score 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0029 52.3th percentile

Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-8342 is a high-severity Missing Authorization (CWE-862) vulnerability in Wordpress (inferred from references). Its CVSS base score is 8.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 47.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-11 (Error Handling).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly mitigates the insufficient empty value checking in the lwp_ajax_register function, preventing authentication bypass via invalid inputs.

SI-11 Error Handling good match

prevent

Addresses improper Firebase API error handling when the API key is not configured, ensuring errors do not enable OTP bypass and unauthorized access.

SI-2 Flaw Remediation good match

prevent

Requires timely flaw remediation by updating the plugin beyond version 1.8.47, eliminating the authentication bypass vulnerability as per advisories.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1078 Valid Accounts Stealth

Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.

attack.mitre.org →

Why these techniques?

Auth bypass in public-facing WordPress plugin directly enables remote exploitation of the web app (T1190) to obtain access to valid accounts (T1078).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

The WooCommerce OTP Login With Phone Number, OTP Verification plugin for WordPress is vulnerable to authentication bypass due to insufficient empty value checking in the lwp_ajax_register function in all versions up to, and including, 1.8.47. This makes it possible for…

unauthenticated attackers to bypass OTP verification and gain administrative access to any user account with a configured phone number by exploiting improper Firebase API error handling when the Firebase API key is not configured.

Deeper analysisAI

CVE-2025-8342 is an authentication bypass vulnerability in the WooCommerce OTP Login With Phone Number, OTP Verification plugin for WordPress, affecting all versions up to and including 1.8.47. The issue arises from insufficient empty value checking in the lwp_ajax_register function, coupled with improper Firebase API error handling when the Firebase API key is not configured. This flaw, classified under CWE-862 (Missing Authorization), has a CVSS v3.1 base score of 8.1 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Unauthenticated attackers can exploit the vulnerability remotely with high attack complexity and no privileges required. By targeting the registration endpoint, they can bypass OTP verification and gain administrative access to any user account that has a configured phone number, potentially leading to full site compromise including high impacts on confidentiality, integrity, and availability.

Advisories and code references, including Wordfence's threat intelligence report and WordPress plugin Trac entries, highlight the vulnerable code at lines 4358 and 4373 in login-with-phonenumber.php (version 1.8.47). A relevant changeset in the plugin repository addresses the issue, indicating that updating to a patched version is the primary mitigation.