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CVE-2026-46382: Meeting Room Booking System has server-side request forgery in import functionality

• Severity: high (CVSS 8.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-10-23
• Weakness: CWE-918

Description

The Meeting Room Booking System (MRBS) is a PHP-based application for booking meeting rooms. Prior to version 1.12.2, a user-supplied private/local URI can be made to be fetched without checks. Version 1.12.2 contains a fix. No known workarounds are available.

Affected products

• meeting-room-booking-system mrbs-code: before 1.12.2

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-gh77-mpcm-f8r3

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