CVE-2025-13317: CWE-862 Missing Authorization in codepeople Appointment Booking Calendar
The Appointment Booking Calendar plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.3.96. This is due to the plugin exposing an unauthenticated booking processing endpoint (cpabc_appointments_check_IPN_verification) that trusts attacker-supplied payment notifications without verifying their origin, authenticity, or requiring proper authorization checks. This makes it possible for unauthenticated attackers to arbitrarily confirm bookings and insert them into the live calendar via the 'cpabc_ipncheck' parameter, triggering administrative and customer notification emails and disrupting operations.
AI Analysis
Technical Summary
CVE-2025-13317 is a missing authorization vulnerability (CWE-862) in the Appointment Booking Calendar plugin for WordPress. The plugin exposes an unauthenticated booking processing endpoint (cpabc_appointments_check_IPN_verification) that trusts payment notifications without verifying origin or authorization. This flaw enables unauthenticated attackers to confirm bookings and insert them into the calendar via the 'cpabc_ipncheck' parameter, causing administrative and customer notifications to be sent and disrupting normal booking operations. The vulnerability affects all versions up to and including 1.3.96. The CVSS 3.1 base score is 5.3 (medium severity), reflecting network attack vector, low complexity, no privileges required, no user interaction, and impact limited to integrity loss without confidentiality or availability impact.
Potential Impact
An attacker can arbitrarily confirm bookings and insert them into the live calendar without authentication. This can disrupt booking operations and cause false administrative and customer notification emails to be sent. There is no direct confidentiality or availability impact reported. No known exploits in the wild have been identified at this time.
Mitigation Recommendations
No patch or official fix is currently available for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should consider disabling the vulnerable plugin or restricting access to the affected endpoint if possible. Monitor vendor communications for updates on remediation.
CVE-2025-13317: CWE-862 Missing Authorization in codepeople Appointment Booking Calendar
Description
The Appointment Booking Calendar plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.3.96. This is due to the plugin exposing an unauthenticated booking processing endpoint (cpabc_appointments_check_IPN_verification) that trusts attacker-supplied payment notifications without verifying their origin, authenticity, or requiring proper authorization checks. This makes it possible for unauthenticated attackers to arbitrarily confirm bookings and insert them into the live calendar via the 'cpabc_ipncheck' parameter, triggering administrative and customer notification emails and disrupting operations.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-13317 is a missing authorization vulnerability (CWE-862) in the Appointment Booking Calendar plugin for WordPress. The plugin exposes an unauthenticated booking processing endpoint (cpabc_appointments_check_IPN_verification) that trusts payment notifications without verifying origin or authorization. This flaw enables unauthenticated attackers to confirm bookings and insert them into the calendar via the 'cpabc_ipncheck' parameter, causing administrative and customer notifications to be sent and disrupting normal booking operations. The vulnerability affects all versions up to and including 1.3.96. The CVSS 3.1 base score is 5.3 (medium severity), reflecting network attack vector, low complexity, no privileges required, no user interaction, and impact limited to integrity loss without confidentiality or availability impact.
Potential Impact
An attacker can arbitrarily confirm bookings and insert them into the live calendar without authentication. This can disrupt booking operations and cause false administrative and customer notification emails to be sent. There is no direct confidentiality or availability impact reported. No known exploits in the wild have been identified at this time.
Mitigation Recommendations
No patch or official fix is currently available for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should consider disabling the vulnerable plugin or restricting access to the affected endpoint if possible. Monitor vendor communications for updates on remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-11-17T15:15:33.423Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69216996633f6b6b24ab478d
Added to database: 11/22/2025, 7:43:18 AM
Last enriched: 4/9/2026, 4:27:57 PM
Last updated: 5/9/2026, 9:49:02 PM
Views: 150
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