EUVD-2026-75936
GHSA-gf52-5www-f3x3
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
REST endpoint is publicly accessible by default with no authentication required; impact is confined to integrity (overwriting three contact fields) with no confidentiality or availability consequence.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
3DescriptionCVE.org
The Booktics - Booking Calendar for Appointments and Service Businesses plugin for WordPress is vulnerable to unauthorized modification of data in all versions up to, and including, 1.0.23. This is due to the create_order_permission() permission callback on the POST /wp-json/booktics/v1/orders REST route unconditionally returning true, combined with find_and_update_guest() overwriting an existing customer record's stored name, phone, and wp_user_id whenever the caller-supplied email matches, with no proof of ownership. This makes it possible for unauthenticated attackers to overwrite the contact details (name and phone) of any existing customer whose email address they know, poisoning downstream reminder emails, SMS, calendar invites, and CRM data.
AnalysisAI
Unauthorized customer data modification in the Booktics WordPress plugin allows unauthenticated remote attackers to overwrite any existing customer's stored name, phone number, and linked WordPress user ID by supplying only the target's email address in a crafted REST API request. All plugin versions through 1.0.23 by Arraytics are affected, with the root cause split between a permission callback that unconditionally returns true and a guest-update function that applies caller-supplied contact data to any record whose email matches without ownership verification. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The Booktics plugin must be installed and active at version 1.0.23 or earlier on the WordPress site. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.3 Medium score accurately reflects the bounded impact: only three contact fields are writable, no credentials or session tokens are exposed, and the attacker must already know a target customer's email address - a prerequisite that limits opportunistic mass exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patched version is confirmed in the available advisory data; the Wordfence advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/c86956bf-b013-4a84-b77e-8b1007238b27 should be monitored for a plugin update from Arraytics. … Detailed patch versions, workarounds, and compensating controls in full report. |
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