CVE-2026-103304
Deferred Deferred - Pending Action

Unauthenticated AJAX Actions in eaSYNC Booking WordPress Plugin

Publication date: 2026-10-15

Last updated on: 2026-10-15

Assigner: WPScan

Description
The eaSYNC Booking WordPress plugin before 1.3.31 does not perform authorization or nonce checks on several of its cancellation-related AJAX actions, allowing unauthenticated users to create booking cancellation requests, trigger booking notification emails, and overwrite the content of the emails the site sends.

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Meta Information

Published
2026-10-15
Last Modified
2026-10-15
Generated
2026-10-19
AI Q&A
2026-10-15
EPSS Evaluated
2026-10-18
NVD
CVE-2026-103304
EUVD
EUVD-2026-101849

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Unknown eaSYNC Booking 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

The eaSYNC Booking WordPress plugin before version 1.3.31 has a vulnerability where it lacks authorization and nonce checks on certain AJAX actions related to booking cancellations. This allows unauthenticated users to create booking cancellation requests, trigger booking notification emails, and modify the content of those emails without proper authentication.

Detection Guidance

Check if your WordPress site uses the eaSYNC Booking plugin version prior to 1.3.31. Inspect network traffic for unauthorized AJAX requests to booking cancellation endpoints. Look for unexpected email notifications or modifications to email content triggered by unknown sources.

Impact Analysis

Unauthenticated attackers could exploit this to send unauthorized booking cancellation requests, spam users with fake notifications, or alter the content of legitimate emails sent by the site. This could lead to confusion, reputational damage, or potential phishing risks for users receiving modified notifications.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by allowing unauthorized modifications to booking notification emails, which may contain sensitive personal or health information. Unauthenticated access to modify such emails could lead to improper handling of protected data, violating confidentiality requirements under these regulations.

Mitigation Strategies

Update the eaSYNC Booking plugin to version 1.3.31 or later immediately. If updating is not possible, consider disabling the plugin temporarily until a patch is applied. Monitor email notifications and booking cancellation requests for suspicious activity.

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