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v0.166.0

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@bep bep released this 09 Sep 15:10

This release is mostly about hardening and bug fixes, but there are some notable changes:

  • .Render now takes an optional context argument: {{ .Render "view" $ctx }}, mirroring the partial API. This makes it possible to pass e.g. a dict to a content view. See #15077.
  • The return keyword in templates has been reimplemented. It now works in any template (not just partials) and can be used anywhere, e.g. inside if or range blocks. See #15212.
  • New resources.Publish template function and IndexOf method on Pages.
  • related config: new tokenize option for index values, and index creation is faster.
  • Several security fixes; see the notes below.

Note

Glob patterns

The glob library used for e.g. module mounts (includeFiles, excludeFiles), cascade targets, segments, deployment matchers and noVendor has been upgraded to v1.0.0. This is a complete rewrite of the matching engine that fixes a long list of correctness bugs, but it also means that some patterns may behave differently:

  • Malformed patterns (e.g. an unclosed {, an empty [] class) now fail with a syntax error instead of being silently accepted.
  • ** matches any sequence of characters including separators, but it is not the **/ "globstar" of shells: **/x requires the literal / and does not match x, and a/**/b does not match a/b. Use {**/,}x if you need both.
  • \ is the escape character, so a literal backslash must be written as \\.

If a pattern that used to match no longer does (or vice versa), it was most likely relying on a bug in the old engine.

Security

  • text/org content is now denied by default, as Org mode's export blocks and @@html:...@@ snippets pass raw HTML through unescaped, making it the same XSS sink as text/html. Sites with Org content can opt back in via security.allowContent.
  • Remote fetches (resources.GetRemote etc.) now validate the resolved address at dial time and reject loopback, private, link-local, CGNAT and similar ranges. This only applies under the default security.http.urls allowlist; if you have customized it, you have opted into your own hosts and the check stands down. Proxies from HTTP_PROXY/HTTPS_PROXY hide the destination address from this check and are now ignored unless you set security.http.proxyFromEnvironment = true.
  • Node.js tools (PostCSS, Tailwind CSS etc.) now fail before invocation if a symlink inside the project resolves outside the allowed read/write roots. If you have a legitimate link, add its target to security.node.permissions.allowRead.
  • Mount roots that are themselves symlinks (e.g. themes/mytheme/assets -> /somewhere/else) are now dropped. This closes a gap in the themes/ confinement; absolute mount source values are still allowed.

Other

  • {{ return <value> }} outside a partial is now an error; it was previously silently ignored.
  • A page without an explicit slug whose title contains a / (e.g. Watch/listen to this) now gets a single URL segment (.../watch-listen-to-this/) instead of a nested one (.../watch/listen-to-this/). Taxonomy and term pages are not affected.
  • Hugo is now built with Go 1.27.

KaTeX

When upgrading to Hugo v0.166.0, sites using transform.ToMath with the output option set to html or htmlAndMathml must update the KaTeX stylesheet referenced in their template(s) to version 0.18.4 or higher. Using older CSS versions like 0.16.21 will cause certain mathematical or chemical expressions to render incorrectly.

Example update:

- <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.21/dist/katex.min.css">
+ <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.18.4/dist/katex.min.css">

See these examples:

Bug fixes

Improvements

Dependency Updates