CVE-2026-46382

Description

A flaw was found in the Meeting Room Booking System (MRBS). This vulnerability, known as Server-Side Request Forgery (SSRF), allows a remote attacker to trick the server into making requests to internal or local network resources. By exploiting this, an attacker could potentially gain unauthorized access to sensitive information or perform actions on behalf of the server.

Statement

This Important flaw in the Meeting Room Booking System (MRBS) import functionality allows a remote attacker to perform Server-Side Request Forgery (SSRF). This enables the server to fetch private or local network URIs without proper validation, potentially leading to unauthorized information disclosure or access to internal network services. The impact is elevated due to the potential for internal network reconnaissance and interaction. This component is shipped only in Fedora. Red Hat does not ship this component in any core Red Hat products.

Mitigation

Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
Version 1.12.2 contains the fix.

Understanding the Weakness (CWE)

CWE-918

Confidentiality

Technical Impact: Read Application Data

Integrity

Technical Impact: Execute Unauthorized Code or Commands

Access Control

Technical Impact: Bypass Protection Mechanism

By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.

Frequently Asked Questions

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