How severe is CVE-2026-2628?

CVE-2026-2628 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-2628 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-2628?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-2628 have an EU (EUVD) identifier?

Yes. CVE-2026-2628 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9274.

When was CVE-2026-2628 published?

CVE-2026-2628 was published on 2026-03-03 and last updated on 2026-06-17.

CVE-2026-2628

CVE-2026-2628 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-288.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9274
Weakness: CWE-288
Published: 2026-03-03
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-2628?: 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.
How severe is CVE-2026-2628?: CVE-2026-2628 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-2628 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-2628?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-2628 have an EU (EUVD) identifier?: Yes. CVE-2026-2628 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9274.
When was CVE-2026-2628 published?: CVE-2026-2628 was published on 2026-03-03 and last updated on 2026-06-17.

References

Other CWE-288 vulnerabilities

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