CVE-2026-2628

Critical

Published: 03 March 2026

Published

03 March 2026

Modified

22 April 2026

KEV Added

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Patch

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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0086 53.6th percentile

Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-2628 is a critical-severity Authentication Bypass Using an Alternate Path or Channel (CWE-288) vulnerability in Wordpress (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 in the top 46.4% 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 RA-5 (Vulnerability Monitoring and Scanning) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-2628 is an authentication bypass vulnerability (CWE-288) in the All-in-One Microsoft 365 & Entra ID / Azure AD SSO Login plugin for WordPress, affecting all versions up to and including 2.2.5. Published on 2026-03-03, 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), marking it as critical due to its potential for severe impact without prerequisites.

Unauthenticated attackers can exploit this vulnerability remotely over the network with low complexity and no user interaction. Successful exploitation allows bypassing authentication mechanisms, enabling login as any user, including administrators, which could lead to full site compromise through unauthorized access to sensitive data and administrative functions.

Advisories and patch details are available via references including the Wordfence threat intelligence page (https://www.wordfence.com/threat-intel/vulnerabilities/id/5e15e36e-55f9-4095-a0ba-48ef9434606a?source=cve) and the WordPress plugin trac repository (https://plugins.trac.wordpress.org/browser/login-with-azure?rev=3465063).

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-9274

Vulnerability details

The All-in-One Microsoft 365 & Entra ID / Azure AD SSO Login plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 2.2.5. This makes it possible for unauthenticated attackers to bypass authentication and log…

in as other users, including administrators.

CWE(s): CWE-288

Related Threats

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 →

Why these techniques?

The vulnerability is an authentication bypass in a public-facing WordPress plugin, directly enabling exploitation of a public-facing application for unauthorized access as any user including administrators.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0