CVE-2026-8684: Auth Bypass (CVSS 5.3)

Description

The MotoPress Hotel Booking plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 6.0.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite or delete the internal notes (_mphb_booking_internal_notes) of any booking by supplying an arbitrary booking ID. The nonce for this action is output in the HTML source of every public page through wp_localize_script (MPHB._data.nonces), so any unauthenticated visitor can obtain a valid nonce and perform the action without any account or prior interaction.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS — Exploit Prediction

0.0028

Probability of exploitation

0.19%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://plugins.trac.wordpress.org/browser/motopress-hotel-booking-lite/tags/5.4.1/includes/ajax-api/ajax-actions/abstract-ajax-api-action.php#L34 https://plugins.trac.wordpress.org/browser/motopress-hotel-booking-lite/tags/5.4.1/includes/ajax-api/ajax-actions/update-booking-notes.php#L83 https://plugins.trac.wordpress.org/browser/motopress-hotel-booking-lite/tags/5.4.1/includes/ajax-api/ajax-api-handler.php#L43 https://plugins.trac.wordpress.org/browser/motopress-hotel-booking-lite/tags/6.0.1/includes/ajax-api/ajax-actions/abstract-ajax-api-action.php#L34 https://plugins.trac.wordpress.org/browser/motopress-hotel-booking-lite/tags/6.0.1/includes/ajax-api/ajax-actions/update-booking-notes.php#L83 https://plugins.trac.wordpress.org/browser/motopress-hotel-booking-lite/tags/6.0.1/includes/ajax-api/ajax-api-handler.php#L43 https://plugins.trac.wordpress.org/changeset/3537354/motopress-hotel-booking-lite/trunk/includes/ajax-api/ajax-actions/update-booking-notes.php https://www.wordfence.com/threat-intel/vulnerabilities/id/6567e63c-3129-47b2-a734-733eb599821a?source=cve

Frequently Asked Questions

What is CVE-2026-8684? +

The MotoPress Hotel Booking plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 6.0.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite or delete the internal notes (_mphb_booking_internal_notes) of any booking by supplying an arbitrary booking ID. The nonce for this action is output in the HTML source of every public page through wp_localize_script (MPHB._data.nonces), so any unauthenticated visitor can obtain a valid nonce and perform the action without any account or prior interaction. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-8684? +

CVE-2026-8684 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0028, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-8684? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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