CVE-2026-54528 | JupyterLab Git Plugin up to 0.53.x handlers.py GitHandler.prepare improper authentication

A vulnerability identified as problematic has been detected in JupyterLab Git Plugin up to 0.53.x. This issue affects the function GitHandler.prepare of the file jupyterlab_git/handlers.py of the component Git Handler. This manipulation causes improper authentication.

The identification of this vulnerability is CVE-2026-54528. It is possible to initiate the attack remotely. There is no exploit available.