---
id: CVE-2026-46688
title: >-
  The Meeting Room Booking System (MRBS) is a PHP-based application for booking
  meeting rooms
summary: >-
  The Meeting Room Booking System (MRBS) is a PHP-based application for booking
  meeting rooms. Prior to version 1.12.2, an unauthenticated request can be made
  to redirect the user to a query-specified location. This allows an attacker to
  c…
severity: medium
cvss: 6.9
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-601
vendor: meeting-room-booking-system
product: mrbs-code
affected:
  - mrbs-code < 1.12.2
published: '2026-08-13'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:02:22.660'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46688'
references:
  - url: >-
      https://github.com/meeting-room-booking-system/mrbs-code/releases/tag/v1.12.2
    label: security-advisories@github.com
  - url: >-
      https://github.com/meeting-room-booking-system/mrbs-code/security/advisories/GHSA-6xcj-g522-859f
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-13T13:11:14.196139Z'
cvssSource: cna
ingestedAt: '2026-09-14T11:45:11.981Z'
epss: 0.00421
epssPercentile: 0.33842
---

## Overview

The Meeting Room Booking System (MRBS) is a PHP-based application for booking meeting rooms. Prior to version 1.12.2, an unauthenticated request can be made to redirect the user to a query-specified location. This allows an attacker to create a specially-crafted URL to an MRBS installation that will cause the user who clicks it to be redirected to the attacker-specified redirect URL, which could be a spoofed MRBS login page, for example. Version 1.12.2 contains a fix. No known workarounds are available.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.