Impact Links and image links in the default markdown to HTML renderer are not properly escaped. Hugo users who trust their Markdown content or have custom render hooks for links and images are not affected.

Patches Patched in v0.159.2

Workarounds Create custom render hooks for links and images in a Hugo theme/project.

Hugo is a fast and Flexible Static Site Generator built in Go. Hugo depends on Go's os/exec for certain features, e.g. for rendering of Pandoc documents if these binaries are found in the system %PATH% on Windows. In Hugo before version 0.79.1, if a malicious file with the same name (exe or bat) is found in the current working directory at the time of running hugo, the malicious command will be invoked instead of the system one. Windows users who run hugo inside untrusted Hugo sites are affected. Users should upgrade to Hugo v0.79.1. Other than avoiding untrusted Hugo sites, there is no workaround.