Some HTML attributes in Markdown in the internal templates listed below not escaped. Impacted are Hugo users who do not trust their Markdown content files and are using one or more of these templates. _default/_markup/render-link.html from v0.123.0 _default/_markup/render-image.html from v0.123.0 _default/_markup/render-table.html from v0.134.0 shortcodes/youtube.html from v0.125.0
Title argument in Markdown for links and images not escaped in internal render hooks. Impacted are Hugo users who have these hooks enabled and do not trust their Markdown content files.
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 …