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Vulnerabilities

Security incident · CVE-2025-13754

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1

Published Dec 19, 2025 · catalog updated Apr 8, 2026 · Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-13754. EPSS is 0.35%. Act only if a listed version of Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.35%
Remediation
Vendor / distro source
Affected products
vendor croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin 0 ≤1.6.9.16

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6.9.16. This is due to the plugin exposing its admin embed endpoint at without authentication, which leaks plugin settings including staff names, business names, and configuration data that are not publicly displayed on the booking form. This makes it possible for unauthenticated attackers to extract private business configuration. In premium versions with integrations configured, this might also expose other sensit

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin 0 ≤1.6.9.160 ≤1.6.9.16

How to fix CVE-2025-13754

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-13754. EPSS is 0.35%. Act only if a listed version of Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin is installed.

Which versions are affected?

Compare what you have installed with croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin 0 ≤1.6.9.16 0 ≤1.6.9.16. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.35%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 19, 2025 · EUVD

    Detected

    The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6.9.16. This is due to the plugin exposing its admin embed endpoint at without authentication, which leaks plugin settings including staff names, business names, and configuration data that are not publicly displayed on

  2. Apr 8, 2026 · EUVD

    Updated

    The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6.9.16. This is due to the plugin exposing its admin embed endpoint at without authentication, which leaks plugin settings including staff names, business names, and configuration data that are not publicly displayed on

Sources

  • CVE.orgVulnerability recordCVE-2025-13754

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-13754

    30-day exploitation probability 0.35%

    first.org
  • EUVDVulnerability recordEUVD-2025-204471

    The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.6.9.16. This is due to the plugin exposing its admin embed endpoint at without authentication, whic

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • CVE.orgOct 30, 2026
  • EUVDOct 30, 2026