How severe is CVE-2025-1638?

CVE-2025-1638 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-2025-1638 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-1638?

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-2025-1638 have an EU (EUVD) identifier?

Yes. CVE-2025-1638 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5893.

When was CVE-2025-1638 published?

CVE-2025-1638 was published on 2025-03-01 and last updated on 2026-06-17.

CVE-2025-1638

CVE-2025-1638 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% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5893
Weakness: CWE-288
Published: 2025-03-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-1638?: 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.
How severe is CVE-2025-1638?: CVE-2025-1638 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-2025-1638 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-1638?: 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-2025-1638 have an EU (EUVD) identifier?: Yes. CVE-2025-1638 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5893.
When was CVE-2025-1638 published?: CVE-2025-1638 was published on 2025-03-01 and last updated on 2026-06-17.

References

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