Request Filtering Bypass in Grafana Enterprise by Grafana Labs

CVE-2023-4399

What is CVE-2023-4399?

Grafana Enterprise, a popular open-source monitoring and observability platform, contains a vulnerability in its Request security feature. This feature is designed to prevent access to specific hosts by utilizing a deny list approach configured by administrators. However, an exploit has been identified that allows an attacker to bypass these restrictions through the use of punycode encoding in the request address. By manipulating this encoding, unauthorized requests may be sent to hosts that were intended to be restricted, potentially leading to unauthorized data access and other security risks.

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