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CVE-2026-116557

9.1, critical

Murgroland WP Booking System - Booking Calendar Missing Authorization Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.1, critical critical CVSS v3.1
EPSS, next 30 days
0.3% higher than 28.4% of scored CVEs
Exploitation
No public evidence
Published
31 Oct 2026yesterday

Description

The WP Booking System - Booking Calendar plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the wpbs_action_ajax_calendar_remove_note() function in versions up to, and including, 2.1.0.5 This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary calendar notes belonging to any calendar.

Details

Vendor
Murgroland
Product
WP Booking System - Booking Calendar
Weakness
CWE-862 (opens in a new tab)
Status
Received
Updated
31 Oct 2026
Assigner
security@wordfence.com

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

References 6

Other references 6

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Murgroland CVEs

Every Murgroland CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-108123 Murgroland WP Booking System - Booking Calendar Missing Authorization Vulnerability EPSS 1% 7.5, high

Beyond this page

Is CVE-2026-116557 in your network?

This page tells you how dangerous CVE-2026-116557 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-116557 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 1 Nov 2026, not the live upstream state.