How severe is CVE-2026-66462?

CVE-2026-66462 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-66462 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-66462?

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.

When was CVE-2026-66462 published?

CVE-2026-66462 was published on 2026-08-13 and last updated on 2026-08-14.

CVE-2026-66462

CVE-2026-66462 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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-497.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-497
Published: 2026-08-13
Last modified: 2026-08-14

Description

Unauthenticated Sensitive Data Exposure in WooCommerce Appointments <= 5.3.8 versions.

Frequently asked questions

What is CVE-2026-66462?: Unauthenticated Sensitive Data Exposure in WooCommerce Appointments <= 5.3.8 versions.
How severe is CVE-2026-66462?: CVE-2026-66462 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-66462 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-66462?: 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.
When was CVE-2026-66462 published?: CVE-2026-66462 was published on 2026-08-13 and last updated on 2026-08-14.

References

https://patchstack.com/database/wordpress/plugin/woocommerce-appointments/vulnerability/wordpress-woocommerce-appointments-plugin-5-3-8-sensitive-data-exposure-vulnerability?_s_id=cve

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