CVE-2026-8684 | MotoPress Hotel Booking <= 6.0.1 - Missing Authorization to Unauthenticated Arbitrary Booking Notes Modification via mphb_update_booking_notes AJAX Action

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.

Published: 2026-05-22 Last update: 2026-05-22 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2026-8684 is rated Low Risk (28.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.07%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-8684

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-22 0.07%

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-8684

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
3.9 1.4 [email protected]

Weakness enumeration for CVE-2026-8684

GitHub Security Advisory for CVE-2026-8684

GHSA-x7jf-v64x-878j · Severity: medium — The MotoPress Hotel Booking plugin for WordPress is vulnerable to authorization bypass in all...

Affected software / configurations for CVE-2026-8684

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-8684

URL Tags
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
cvelogic Threat Intelligence