Squashed 'docs/' changes from af4b7ac5b..54f0e8776

54f0e8776 Update image-actions.yml
94e5cad02 Update image-actions.yml
0ad20d226 Add a page about Hugo's Security Model
0dee16d11 Link to Régis Full Partials series
138782808 Update partialCached.md

git-subtree-dir: docs
git-subtree-split: 54f0e877670fd434c6903e20774fcf7eba9255fa

.github/calibre/image-actions.yml

@@ -1,2 +1,3 @@
 ignorePaths:
   - "resources/**"
+  - "_vendor/**"

content/en/about/security-model/index.md

@@ -0,0 +1,54 @@
+---
+title: Hugo's Security Model
+description: A summary of Hugo's security model. 
+date: 2019-10-01
+layout: single
+keywords: ["Security", "Privacy"]
+menu:
+  docs:
+    parent: "about"
+    weight: 4
+weight: 5
+sections_weight: 5
+draft: false
+aliases: [/security/]
+toc: true
+---
+
+## Runtime Security
+
+Hugo produces static output, so once built, the runtime is the browser (assuming the output is HTML) and any server (API) that you integrate with.
+
+But when developing and building your site, the runtime is the `hugo` executable. Securing a runtime can be [a real challenge](https://blog.logrocket.com/how-to-protect-your-node-js-applications-from-malicious-dependencies-5f2e60ea08f9/). 
+
+**Hugo's main approach is that of sandboxing:**
+
+* Hugo has a virtual file system and only the main project (not third-party components) is allowed to mount directories or files outside the project root.
+* Only the main project can walk symbolic links.
+* User-defined components have only read-access to the filesystem.
+* We shell out to some external binaries to support [Asciidoctor](/content-management/formats/#list-of-content-formats) and simliar, but those binaries and their flags are predefined. General functions to run arbitrary external OS commands have been [discussed](https://github.com/gohugoio/hugo/issues/796), but not implemented because of security concerns.
+
+Hugo will soon introduce a concept of _Content Source Plugins_ (AKA _Pages from Data_), but the above will still hold true.
+
+## Dependency Security
+
+Hugo builds as a static binary using [Go Modules](https://github.com/golang/go/wiki/Modules) to manage its dependencies. Go Modules have several safeguards, one of them being the `go.sum` file. This is a database of the expected cryptographic checksums of all of your dependencies, including any transitive.
+
+[Hugo Modules](/hugo-modules/) is built on top of Go Modules functionality, and a Hugo project using Hugo Modules will have a `go.sum` file. We recommend that you commit this file to your version control system. The Hugo build will fail if there is a checksum mismatch, which would be an indication of [dependency tampering](https://julienrenaux.fr/2019/12/20/github-actions-security-risk/).
+
+## Web Application Security
+
+These are the security threats as defined by [OWASP](https://en.wikipedia.org/wiki/OWASP).
+
+For HTML output, this is the core security model:
+
+https://golang.org/pkg/html/template/#hdr-Security_Model
+
+In short:
+
+Templates authors (you) are trusted, but the data you send in is not.
+This is why you sometimes need to use the _safe_ functions, such as `safeHTML`, to avoid escaping of data you know is safe.
+There is one exception to the above, as noted in the documentation: If you enable inline shortcodes, you also say that the shortcodes and data handling in content files are trusted, as those macros are treated as pure text.
+It may be worth adding that Hugo is a static site generator with no concept of dynamic user input.
+
+For content, the default Markdown renderer is [configured](/getting-started/configuration-markup) to remove or escape potentially unsafe content. This behavior can be reconfigured if you trust your content.

content/en/functions/partialCached.md

@@ -21,7 +21,6 @@ aliases: []
 
 The `partialCached` template function can offer significant performance gains for complex templates that don't need to be re-rendered on every invocation.
 
-
 **Note:** Each Site (or language) has its own `partialCached` cache, so each site will execute a partial once.
 
 Here is the simplest usage:
@@ -42,4 +41,7 @@ If you need to pass additional parameters to create unique variants, you can pas
 {{ partialCached "footer.html" . .Params.country .Params.province }}
 ```
 
-Note that the variant parameters are not made available to the underlying partial template. They are only use to create a unique cache key.
+Note that the variant parameters are not made available to the underlying partial template. They are only use to create a unique cache key. Since Hugo `0.61.0` you can use any object as cache key(s), not just strings.
+
+
+> See also the [The Full Partial Series Part 1: Caching!](https://regisphilibert.com/blog/2019/12/hugo-partial-series-part-1-caching-with-partialcached/)