How severe is CVE-2023-51471?

CVE-2023-51471 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2023-51471 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-51471?

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

Does CVE-2023-51471 have an EU (EUVD) identifier?

Yes. CVE-2023-51471 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56184.

When was CVE-2023-51471 published?

CVE-2023-51471 was published on 2024-04-24 and last updated on 2026-06-17.

CVE-2023-51471

CVE-2023-51471 is a high-severity vulnerability with a CVSS 3.x base score of 8.2. 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-287.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-56184
Weakness: CWE-287
Published: 2024-04-24
Last modified: 2026-06-17

Description

Improper Authentication vulnerability in Mestres do WP Checkout Mestres WP allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Checkout Mestres WP: from n/a through 7.1.9.7.

Frequently asked questions

What is CVE-2023-51471?: Improper Authentication vulnerability in Mestres do WP Checkout Mestres WP allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Checkout Mestres WP: from n/a through 7.1.9.7.
How severe is CVE-2023-51471?: CVE-2023-51471 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2023-51471 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-51471?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-51471 have an EU (EUVD) identifier?: Yes. CVE-2023-51471 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56184.
When was CVE-2023-51471 published?: CVE-2023-51471 was published on 2024-04-24 and last updated on 2026-06-17.

References

https://patchstack.com/database/vulnerability/checkout-mestres-wp/wordpress-checkout-mestres-wp-plugin-7-1-9-6-unauthenticated-arbitrary-options-update-vulnerability?_s_id=cve

Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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