Login With Phone Number - Authentication Bypass (CVE-2025-8342)

Q: Am I affected by this vulnerability?

You are affected if your site runs Login With Phone Number. No account is needed to exploit this, so a public site is reachable by anyone.

Q: How do I fix it?

Update Login With Phone Number to the latest available version. Where the vendor has not yet published a fix, remove or disable the plugin until they do. Until you can update, Administrator multi-factor authentication in Hack Halt Pro contains this class of attack at the request layer.

Q: What can an attacker actually do?

This is a Authentication Bypass flaw. An attacker who exploits it can sign in as another user, frequently an administrator, without a password.

CVE-2025-8342

Vulnerability CVE-2025-8342 PLUGIN login-with-phone-number HIGH

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.

CVE-2025-8342

HIGH CVSS 8.1 Published 2025-08-15 Updated 2026-06-17

AI Risk High (87/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P2 Urgent

Severity Band HIGH

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

Affected Components 1

Reference Links 4

AI Risk Engine High (87/100)

Exploitability Very High

Active Exploitation No strong signal

Published Exploit Status No public exploit references

Threat Timeline

2025-08-15 CVE published and first recorded in the threat feed.
2026-06-17 Record updated with latest vulnerability metadata.
2026-04-09 AI technical context refreshed for mitigation and impact guidance.
Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 218 days ago

AI enriched 218 days ago (2026-04-09 07:48 UTC)

Technical Summary

Potential Impact

Severity is HIGH (CVSS 8.1). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Very High based on remote code execution potential, low-bar exploit prerequisites.

Primary risk drivers: remote code execution potential, low-bar exploit prerequisites

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Login With Phone Number PLUGIN · login-with-phone-number Affected: <= 1.8.47 Fixed version not specified

References

What to do about this

Patch immediately Serious, and reachable without meaningful privilege.

Fix it

Update Login With Phone Number to the latest available version.

Where the vendor has not published a fix yet, disable the plugin until they do.

Cannot update today? Administrator multi-factor authentication in Hack Halt Pro blocks this class of attack before WordPress processes the request.

Require a second factor for every administrator account. This is the single highest-value control against credential stuffing and reused passwords, because a valid password alone stops being enough.

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