CVE-2025-1638

Critical

Published: 01 March 2025

Published

01 March 2025

Modified

15 April 2026

KEV Added

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Patch

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CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0003 9.6th percentile

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

Summary

CVE-2025-1638 is a critical-severity Authentication Bypass Using an Alternate Path or Channel (CWE-288) vulnerability in Themeforest (inferred from references). Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 9.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and IA-8 (Identification and Authentication (Non-organizational Users)).

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

IA-8 Identification and Authentication (Non-organizational Users) good match

prevent

Requires authentication of non-organizational users before access, directly mitigating the plugin's failure to validate identities in Facebook and Google login REST API functions.

AC-3 Access Enforcement good match

prevent

Enforces approved access authorizations, preventing unauthenticated attackers from bypassing authentication to impersonate any user including administrators.

SI-2 Flaw Remediation good match

prevent

Directs timely remediation of identified flaws, such as patching the Alloggio Membership plugin to fix the authentication bypass vulnerability.

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 →

T1078.003 Local Accounts Stealth

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

attack.mitre.org →

Why these techniques?

Authentication bypass in public-facing WordPress plugin enables direct network exploitation (T1190) to impersonate and access any local user account including admins (T1078.003).

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

NVD Description

The Alloggio Membership plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.0.2. This is due to the plugin not properly validating a user's identity through the alloggio_membership_init_rest_api_facebook_login and alloggio_membership_init_rest_api_google_login functions. This makes it…

possible for unauthenticated attackers to log in as any user, including administrators, without knowing a password.

Deeper analysisAI

CVE-2025-1638 is an authentication bypass vulnerability in the Alloggio Membership plugin for WordPress, affecting all versions up to and including 1.0.2. The flaw occurs because the plugin fails to properly validate user identity in the alloggio_membership_init_rest_api_facebook_login and alloggio_membership_init_rest_api_google_login functions, allowing attackers to impersonate legitimate users.

Unauthenticated attackers with network access can exploit this vulnerability with low complexity and no user interaction required. Successful exploitation enables logging in as any user account, including administrators, without a password, potentially granting full control over the WordPress site. The issue carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) and is associated with CWE-288 (Authentication Bypass Using an Alternate Path or Channel).

Advisories provide further details on the vulnerability via the Wordfence threat intelligence page at https://www.wordfence.com/threat-intel/vulnerabilities/id/60405e54-e869-4623-892c-0821014f887b?source=cve and the plugin's ThemeForest listing at https://themeforest.net/item/alloggio-hotel-booking-theme/26775539. The CVE was published on 2025-03-01T08:15:34.167.