Grafana is an open source observability and data visualization platform. Versions of Grafana for endpoints prior to 9.1.8 and 8.5.14 could leak authentication tokens to some destination plugins under some conditions. The vulnerability impacts data source and plugin proxy endpoints with authentication tokens. The destination plugin could receive a user's Grafana authentication token. Versions 9.1.8 and 8.5.14 contain a patch for this issue. As a workaround, do not use API keys, JWT authentication, or any HTTP Header based authentication.
https://github.com/grafana/grafana/commit/4dd56e4dabce10007bf4ba1059bf54178c35b177
https://github.com/grafana/grafana/commit/9da278c044ba605eb5a1886c48df9a2cb0d3885f
https://github.com/grafana/grafana/releases/tag/v9.1.8
https://github.com/grafana/grafana/security/advisories/GHSA-jv32-5578-pxjc