CVE-2026-46688

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.

CVSS 4.0

6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-25)

CWE

CWE-601

Published

2026-08-13

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

References

• https://github.com/meeting-room-booking-system/mrbs-code/releases/tag/v1.12.2
• https://github.com/meeting-room-booking-system/mrbs-code/security/advisories/GHSA-6xcj-g522-859f

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