UBUNTU-CVE-2026-104851

fsspec is a specification and Python implementation framework for filesystem interfaces. From 0.9.0 until 2026.6.0, fsspec.implementations.reference.ReferenceFileSystem evaluates fields from Kerchunk reference JSON documents through unrestricted jinja2.Template....render... calls in...

CVE-2026-104851

The fsspec Python implementation framework (versions 0.9.0 through 2026.6.0 ) is vulnerable to Remote Code Execution (RCE) due to unrestricted jinja2 template evaluation. The flaw exists in fsspec.implementations.reference.ReferenceFileSystem when processing Kerchunk reference JSON documents via ...