Booking Plugin up to 1.4.7 on WordPress Notifications tslot_appt_email input validation

Summaryinfo

A vulnerability was found in Booking Plugin up to 1.4.7 on WordPress and classified as critical. Affected by this vulnerability is the function tslot_appt_email of the component Notifications Handler. Such manipulation leads to Remote Code Execution. This vulnerability is uniquely identified as CVE-2025-12842. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Booking Plugin up to 1.4.7 on WordPress. It has been rated as critical. Affected by this issue is the function tslot_appt_email of the component Notifications Handler. The manipulation with an unknown input leads to a remote code execution vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The Booking Plugin for WordPress Appointments – Time Slot plugin for WordPress is vulnerable to unauthorized email sending in versions up to, and including, 1.4.7 due to missing validation on the tslot_appt_email AJAX action. This makes it possible for unauthenticated attackers to send appointment notification emails to arbitrary recipients with attacker-controlled text content in certain email fields, potentially enabling the site to be abused for phishing campaigns or spam distribution.

The advisory is available at wordfence.com. This vulnerability is handled as CVE-2025-12842. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/19/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-198105). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Name

• Booking Plugin

Version

• 1.4.0
• 1.4.1
• 1.4.2
• 1.4.3
• 1.4.4
• 1.4.5
• 1.4.6
• 1.4.7

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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