What is the CVSS score of EUVD-2026-40903?

EUVD-2026-40903 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.2%.

Appointment Booking Calendar EUVD-2026-40903

| CVE-2026-12113 MEDIUM

Missing Authorization (CWE-862)

2026-07-01 Wordfence

GHSA-jg95-92mw-5qqj

Authentication Bypass WordPress Information Disclosure Appointment Booking Calendar

4.3

CVSS 3.1 · Vendor: Wordfence

Severity by source

Vendor (Wordfence) PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

vuln.today AI

4.3 MEDIUM

Endpoint reachable over network (AV:N), contributor login required (PR:L), only booking PII disclosed with no write or availability impact (C:L/I:N/A:N), no scope change.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Jul 01, 2026 - 05:32 vuln.today

CVE Published

Jul 01, 2026 - 04:32 nvd

MEDIUM 4.3

DescriptionCVE.org

The Appointment Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.4.02 via the cpabc_appointments_filter_list. This makes it possible for authenticated attackers, with contributor-level access and above, to extract customer names, email addresses, phone numbers, appointment comments, and other booking personally identifiable information.

AnalysisAI

Sensitive PII exposure in the Appointment Booking Calendar WordPress plugin (versions up to and including 1.4.02) allows any authenticated user with contributor-level access to retrieve customer booking records - including names, email addresses, phone numbers, and appointment comments - via the unprotected cpabc_appointments_filter_list AJAX action. The root cause is CWE-862 (Missing Authorization): the endpoint performs no capability check before returning data, meaning the attacker's only prerequisite is a valid WordPress login at contributor tier or above. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Obtain contributor-level WordPress credentials

Delivery

Authenticate to target WordPress site

Exploit

Send POST to wp-admin/admin-ajax.php with action=cpabc_appointments_filter_list

Execution

Missing authorization check bypassed

Impact

Receive full customer PII dataset in response

Access

Obtain contributor-level WordPress credentials

Delivery

Authenticate to target WordPress site

Exploit

Send POST to wp-admin/admin-ajax.php with action=cpabc_appointments_filter_list

Execution

Missing authorization check bypassed

Impact

Receive full customer PII dataset in response

Vulnerability AssessmentAI

Exploitation	Exploitation requires an authenticated WordPress session with at least contributor-level role (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 3.1 base score of 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N) accurately reflects the threat model: the attack is network-reachable, requires no special conditions, and needs only a contributor-level WordPress account, but the impact is limited to confidentiality of booking PII with no integrity or availability consequence and no scope change. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker registers or obtains a contributor-level WordPress account on a target site running the Appointment Booking Calendar plugin. They send an authenticated POST request to `wp-admin/admin-ajax.php` with `action=cpabc_appointments_filter_list` and any required nonce, and the server responds with the full appointment booking dataset containing customer names, email addresses, phone numbers, and appointment comments. …
Remediation	Update the Appointment Booking Calendar plugin to the version that incorporates SVN changeset 3581633, which reflects the upstream source-level fix committed to the plugin's trunk; however, the specific patched release version number is not independently confirmed in the available data - verify the current version in the WordPress plugin repository before updating. … Detailed patch versions, workarounds, and compensating controls in full report.