# Changelog
## 2.19.1 / 2022-12-13
### Security
* Address CVE-2022-23514, inefficient regular expression complexity. See [GHSA-486f-hjj9-9vhh](https://github.com/flavorjones/loofah/security/advisories/GHSA-486f-hjj9-9vhh) for more information.
* Address CVE-2022-23515, improper neutralization of data URIs. See [GHSA-228g-948r-83gx](https://github.com/flavorjones/loofah/security/advisories/GHSA-228g-948r-83gx) for more information.
* Address CVE-2022-23516, uncontrolled recursion. See [GHSA-3x8r-x6xp-q4vm](https://github.com/flavorjones/loofah/security/advisories/GHSA-3x8r-x6xp-q4vm) for more information.
## 2.19.0 / 2022-09-14
### Features
* Allow SVG 1.0 color keyword names in CSS attributes. These colors are part of the [CSS Color Module Level 3](https://www.w3.org/TR/css-color-3/#svg-color) recommendation released 2022-01-18. [[#243](https://github.com/flavorjones/loofah/issues/243)]
## 2.18.0 / 2022-05-11
### Features
* Allow CSS property `aspect-ratio`. [[#236](https://github.com/flavorjones/loofah/issues/236)] (Thanks, [@louim](https://github.com/louim)!)
## 2.17.0 / 2022-04-28
### Features
* Allow ARIA attributes. [[#232](https://github.com/flavorjones/loofah/issues/232), [#233](https://github.com/flavorjones/loofah/issues/233)] (Thanks, [@nick-desteffen](https://github.com/nick-desteffen)!)
## 2.16.0 / 2022-04-01
### Features
* Allow MathML elements `menclose` and `ms`, and MathML attributes `dir`, `href`, `lquote`, `mathsize`, `notation`, and `rquote`. [[#231](https://github.com/flavorjones/loofah/issues/231)] (Thanks, [@nick-desteffen](https://github.com/nick-desteffen)!)
## 2.15.0 / 2022-03-14
### Features
* Expand set of allowed protocols to include `sms:`. [[#228](https://github.com/flavorjones/loofah/issues/228)] (Thanks, [@brendon](https://github.com/brendon)!)
## 2.14.0 / 2022-02-11
### Features
* The `#to_text` method on `Loofah::HTML::{Document,DocumentFragment}` replaces `<br>` line break elements with a newline. [[#225](https://github.com/flavorjones/loofah/issues/225)]
## 2.13.0 / 2021-12-10
### Bug fixes
* Loofah::HTML::DocumentFragment#text no longer serializes top-level comment children. [[#221](https://github.com/flavorjones/loofah/issues/221)]
## 2.12.0 / 2021-08-11
### Features
* Support empty HTML5 data attributes. [[#215](https://github.com/flavorjones/loofah/issues/215)]
## 2.11.0 / 2021-07-31
### Features
* Allow HTML5 element `wbr`.
* Allow all CSS property values for `border-collapse`. [[#201](https://github.com/flavorjones/loofah/issues/201)]
### Changes
* Deprecating `Loofah::HTML5::SafeList::VOID_ELEMENTS` which is not a canonical list of void HTML4 or HTML5 elements.
* Removed some elements from `Loofah::HTML5::SafeList::VOID_ELEMENTS` that either are not acceptable elements or aren't considered "void" by libxml2.
## 2.10.0 / 2021-06-06
### Features
* Allow CSS properties `overflow-x` and `overflow-y`. [[#206](https://github.com/flavorjones/loofah/issues/206)] (Thanks, [@sampokuokkanen](https://github.com/sampokuokkanen)!)
## 2.9.1 / 2021-04-07
### Bug fixes
* Fix a regression in v2.9.0 which inappropriately removed CSS properties with quoted string values. [[#202](https://github.com/flavorjones/loofah/issues/202)]
## 2.9.0 / 2021-01-14
### Features
* Handle CSS functions in a CSS shorthand property (like `background`). [[#199](https://github.com/flavorjones/loofah/issues/199), [#200](https://github.com/flavorjones/loofah/issues/200)]
## 2.8.0 / 2020-11-25
### Features
* Allow CSS properties `order`, `flex-direction`, `flex-grow`, `flex-wrap`, `flex-shrink`, `flex-flow`, `flex-basis`, `flex`, `justify-content`, `align-self`, `align-items`, and `align-content`. [[#197](https://github.com/flavorjones/loofah/issues/197)] (Thanks, [@miguelperez](https://github.com/miguelperez)!)
## 2.7.0 / 2020-08-26
### Features
* Allow CSS properties `page-break-before`, `page-break-inside`, and `page-break-after`. [[#190](https://github.com/flavorjones/loofah/issues/190)] (Thanks, [@ahorek](https://github.com/ahorek)!)
### Fixes
* Don't drop the `!important` rule from some CSS properties. [[#191](https://github.com/flavorjones/loofah/issues/191)] (Thanks, [@b7kich](https://github.com/b7kich)!)
## 2.6.0 / 2020-06-16
### Features
* Allow CSS `border-style` keywords. [[#188](https://github.com/flavorjones/loofah/issues/188)] (Thanks, [@tarcisiozf](https://github.com/tarcisiozf)!)
## 2.5.0 / 2020-04-05
### Features
* Allow more CSS length units: "ch", "vw", "vh", "Q", "lh", "vmin", "vmax". [[#178](https://github.com/flavorjones/loofah/issues/178)] (Thanks, [@JuanitoFatas](https://github.com/JuanitoFatas)!)
### Fixes
* Remove comments from `Loofah::HTML::Document`s that exist outside the `html` element. [[#80](https://github.com/flavorjones/loofah/issues/80)]
### Other changes
* Gem metadata being set [[#181](https://github.com/flavorjones/loofah/issues/181)] (Thanks, [@JuanitoFatas](https://github.com/JuanitoFatas)!)
* Test files removed from gem file [[#180](https://github.com/flavorjones/loofah/issues/180),[#166](https://github.com/flavorjones/loofah/issues/166),[#159](https://github.com/flavorjones/loofah/issues/159)] (Thanks, [@JuanitoFatas](https://github.com/JuanitoFatas) and [@greysteil](https://github.com/greysteil)!)
## 2.4.0 / 2019-11-25
### Features
* Allow CSS property `max-width` [[#175](https://github.com/flavorjones/loofah/issues/175)] (Thanks, [@bchaney](https://github.com/bchaney)!)
* Allow CSS sizes expressed in `rem` [[#176](https://github.com/flavorjones/loofah/issues/176), [#177](https://github.com/flavorjones/loofah/issues/177)]
* Add `frozen_string_literal: true` magic comment to all `lib` files. [[#118](https://github.com/flavorjones/loofah/issues/118)]
## 2.3.1 / 2019-10-22
### Security
Address CVE-2019-15587: Unsanitized JavaScript may occur in sanitized output when a crafted SVG element is republished.
This CVE's public notice is at [#171](https://github.com/flavorjones/loofah/issues/171)
## 2.3.0 / 2019-09-28
### Features
* Expand set of allowed protocols to include `tel:` and `line:`. [[#104](https://github.com/flavorjones/loofah/issues/104), [#147](https://github.com/flavorjones/loofah/issues/147)]
* Expand set of allowed CSS functions. [related to [#122](https://github.com/flavorjones/loofah/issues/122)]
* Allow greater precision in shorthand CSS values. [[#149](https://github.com/flavorjones/loofah/issues/149)] (Thanks, [@danfstucky](https://github.com/danfstucky)!)
* Allow CSS property `list-style` [[#162](https://github.com/flavorjones/loofah/issues/162)] (Thanks, [@jaredbeck](https://github.com/jaredbeck)!)
* Allow CSS keywords `thick` and `thin` [[#168](https://github.com/flavorjones/loofah/issues/168)] (Thanks, [@georgeclaghorn](https://github.com/georgeclaghorn)!)
* Allow HTML property `contenteditable` [[#167](https://github.com/flavorjones/loofah/issues/167)] (Thanks, [@andreynering](https://github.com/andreynering)!)
### Bug fixes
* CSS hex values are no longer limited to lowercase hex. Previously uppercase hex were scrubbed. [[#165](https://github.com/flavorjones/loofah/issues/165)] (Thanks, [@asok](https://github.com/asok)!)
### Deprecations / Name Changes
The following method and constants are hereby deprecated, and will be completely removed in a future release:
* Deprecate `Loofah::Helpers::ActionView.white_list_sanitizer`, please use `Loofah::Helpers::ActionView.safe_list_sanitizer` instead.
* Deprecate `Loofah::Helpers::ActionView::WhiteListSanitizer`, please use `Loofah::Helpers::ActionView::SafeListSanitizer` instead.
* Deprecate `Loofah::HTML5::WhiteList`, please use `Loofah::HTML5::SafeList` instead.
Thanks to [@JuanitoFatas](https://github.com/JuanitoFatas) for submitting these changes in [#164](https://github.com/flavorjones/loofah/issues/164) and for making the language used in Loofah more inclusive.
## 2.2.3 / 2018-10-30
### Security
Address CVE-2018-16468: Unsanitized JavaScript may occur in sanitized output when a crafted SVG element is republished.
This CVE's public notice is at [#154](https://github.com/flavorjones/loofah/issues/154)
## Meta / 2018-10-27
The mailing list is now on Google Groups [#146](https://github.com/flavorjones/loofah/issues/146):
* Mail: loofah-talk@googlegroups.com
* Archive: https://groups.google.com/forum/#!forum/loofah-talk
This change was made because librelist no longer appears to be maintained.
## 2.2.2 / 2018-03-22
Make public `Loofah::HTML5::Scrub.force_correct_attribute_escaping!`,
which was previously a private method. This is so that downstream gems
(like rails-html-sanitizer) can use this logic directly for their own
attribute scrubbers should they need to address CVE-2018-8048.
## 2.2.1 / 2018-03-19
### Security
Addresses CVE-2018-8048. Loofah allowed non-whitelisted attributes to be present in sanitized output when input with specially-crafted HTML fragments.
This CVE's public notice is at [#144](https://github.com/flavorjones/loofah/issues/144)
## 2.2.0 / 2018-02-11
### Features:
* Support HTML5 `<main>` tag. [#133](https://github.com/flavorjones/loofah/issues/133) (Thanks, [@MothOnMars](https://github.com/MothOnMars)!)
* Recognize HTML5 block elements. [#136](https://github.com/flavorjones/loofah/issues/136) (Thanks, [@MothOnMars](https://github.com/MothOnMars)!)
* Support SVG `<symbol>` tag. [#131](https://github.com/flavorjones/loofah/issues/131) (Thanks, [@baopham](https://github.com/baopham)!)
* Support for whitelisting CSS functions, initially just `calc` and `rgb`. [#122](https://github.com/flavorjones/loofah/issues/122)/[#123](https://github.com/flavorjones/loofah/issues/123)/[#129](https://github.com/flavorjones/loofah/issues/129) (Thanks, [@NikoRoberts](https://github.com/NikoRoberts)!)
* Whitelist CSS property `list-style-type`. [#68](https://github.com/flavorjones/loofah/issues/68)/[#137](https://github.com/flavorjones/loofah/issues/137)/[#142](https://github.com/flavorjones/loofah/issues/142) (Thanks, [@andela-ysanni](https://github.com/andela-ysanni) and [@NikoRoberts](https://github.com/NikoRoberts)!)
### Bugfixes:
* Properly handle nested `script` tags. [#127](https://github.com/flavorjones/loofah/issues/127).
## 2.1.1 / 2017-09-24
### Bugfixes:
* Removed warning for unused variable. [#124](https://github.com/flavorjones/loofah/issues/124) (Thanks, [@y-yagi](https://github.com/y-yagi)!)
## 2.1.0 / 2017-09-24
### Notes:
* Re-implemented CSS parsing and sanitization using the [crass](https://github.com/rgrove/crass) library. [#91](https://github.com/flavorjones/loofah/issues/91)
### Features:
* Added :noopener HTML scrubber (Thanks, [@tastycode](https://github.com/tastycode)!)
* Support `data` URIs with the following media types: text/plain, text/css, image/png, image/gif, image/jpeg, image/svg+xml. [#101](https://github.com/flavorjones/loofah/issues/101), [#120](https://github.com/flavorjones/loofah/issues/120). (Thanks, [@mrpasquini](https://github.com/mrpasquini)!)
### Bugfixes:
* The :unprintable scrubber now scrubs unprintable characters in CDATA nodes (like `<script>`). [#124](https://github.com/flavorjones/loofah/issues/124)
* Allow negative values in CSS properties. Restores functionality that was reverted in v2.0.3. [#91](https://github.com/flavorjones/loofah/issues/91)
## 2.0.3 / 2015-08-17
### Bug fixes:
* Revert support for negative values in CSS properties due to slow performance. [#90](https://github.com/flavorjones/loofah/issues/90) (Related to [#85](https://github.com/flavorjones/loofah/issues/85).)
## 2.0.2 / 2015-05-05
### Bug fixes:
* Fix error with `#to_text` when Loofah::Helpers hadn't been required. [#75](https://github.com/flavorjones/loofah/issues/75)
* Allow multi-word data attributes. [#84](https://github.com/flavorjones/loofah/issues/84) (Thanks, [@jstorimer](https://github.com/jstorimer)!)
* Allow negative values in CSS properties. [#85](https://github.com/flavorjones/loofah/issues/85) (Thanks, [@siddhartham](https://github.com/siddhartham)!)
## 2.0.1 / 2014-08-21
### Bug fixes:
* Load RR correctly when running test files directly. (Thanks, [@ktdreyer](https://github.com/ktdreyer)!)
### Notes:
* Extracted HTML5::Scrub#scrub_css_attribute to accommodate the Rails integration work. (Thanks, [@kaspth](https://github.com/kaspth)!)
## 2.0.0 / 2014-05-09
### Compatibility notes:
* ActionView helpers now must be required explicitly: `require "loofah/helpers"`
* Support for Ruby 1.8.7 and prior has been dropped
### Enhancements:
* HTML5 whitelist allows the following ...
* tags: `article`, `aside`, `bdi`, `bdo`, `canvas`, `command`, `datalist`, `details`, `figcaption`, `figure`, `footer`, `header`, `mark`, `meter`, `nav`, `output`, `section`, `summary`, `time`
* attributes: `data-*` (Thanks, Rafael Franca!)
* URI attributes: `poster` and `preload`
* Addition of the `:unprintable` scrubber to remove unprintable characters from text nodes. [#65](https://github.com/flavorjones/loofah/issues/65) (Thanks, Matt Swanson!)
* `Loofah.fragment` accepts an optional encoding argument, compatible with `Nokogiri::HTML::DocumentFragment.parse`. [#62](https://github.com/flavorjones/loofah/issues/62) (Thanks, Ben Atkins!)
* HTML5 sanitizers now remove attributes without values. (Thanks, Kasper Timm Hansen!)
### Bug fixes:
* HTML5 sanitizers' CSS keyword check now actually works (broken in v2.0). Additional regression tests added. (Thanks, Kasper Timm Hansen!)
* HTML5 sanitizers now allow negative arguments to CSS. [#64](https://github.com/flavorjones/loofah/issues/64) (Thanks, Jon Calhoun!)
## 1.2.1 (2012-04-14)
* Declaring encoding in html5/scrub.rb. Without this, use of the ruby -KU option would cause havoc. ([#32](https://github.com/flavorjones/loofah/issues/32))
## 1.2.0 (2011-08-08)
### Enhancements:
* Loofah::Helpers.sanitize_css is a replacement for Rails's built-in sanitize_css helper.
* Improving ActionView integration.
## 1.1.0 (2011-08-08)
### Enhancements:
* Additional HTML5lib whitelist elements (from html5lib 1524:80b5efe26230).
Up to date with HTML5lib ruby code as of 1723:7ee6a0331856.
* Whitelists (which are not part of the public API) are now Sets (were previously Arrays).
* Don't explode when encountering UTF-8 URIs. ([#25](https://github.com/flavorjones/loofah/issues/25), [#29](https://github.com/flavorjones/loofah/issues/29))
## 1.0.0 (2010-10-26)
### Notes:
* Moved ActiveRecord functionality into `loofah-activerecord` gem.
* Removed DEPRECATIONS.rdoc documenting 0.3.0 API changes.
## 0.4.7 (2010-03-09)
### Enhancements:
* New methods Loofah::HTML::Document#to_text and
Loofah::HTML::DocumentFragment#to_text do the right thing with
whitespace. Note that these methods are significantly slower than
#text. GH [#12](https://github.com/flavorjones/loofah/issues/12)
* Loofah::Elements::BLOCK_LEVEL contains a canonical list of HTML4 block-level4 elements.
* Loofah::HTML::Document#text and Loofah::HTML::DocumentFragment#text
will return unescaped HTML entities by passing :encode_special_chars => false.
## 0.4.4, 0.4.5, 0.4.6 (2010-02-01)
### Enhancements:
* Loofah::HTML::Document#text and Loofah::HTML::DocumentFragment#text now escape HTML entities.
### Bug fixes:
* Loofah::XssFoliate was not properly escaping HTML entities when implicitly scrubbing a string attribute. GH [#17](https://github.com/flavorjones/loofah/issues/17)
## 0.4.3 (2010-01-29)
### Enhancements:
* All built-in scrubbers are accepted by ActiveRecord::Base.xss_foliate
* Loofah::XssFoliate.xss_foliate_all_models replaces use of the constant LOOFAH_XSS_FOLIATE_ALL_MODELS
### Miscellaneous:
* Modified documentation for bootstrapping XssFoliate in a Rails app,
since the use of Bundler breaks the previously-documented method. To
be safe, always use an initializer file.
## 0.4.2 (2010-01-22)
### Enhancements:
* Implemented Node#scrub! for scrubbing subtrees.
* Implemented NodeSet#scrub! for scrubbing a set of subtrees.
* Document.text now only serializes <body> contents (ignores <head>)
* <head>, <html> and <body> added to the HTML5lib whitelist.
### Bug fixes:
* Supporting Rails apps that aren't loading ActiveRecord. GH [#10](https://github.com/flavorjones/loofah/issues/10)
### Miscellaneous:
* Mailing list is now loofah@librelist.com / http://librelist.com
* IRC channel is now \#loofah on freenode.
## 0.4.1 (2009-11-23)
### Bugfix:
* Manifest fixed. Whoops.
## 0.4.0 (2009-11-21)
### Enhancements:
* Scrubber class introduced, allowing development of custom scrubbers.
* Added support for XML documents and fragments.
* Added :nofollow HTML scrubber (thanks Luke Melia!)
* Built-in scrubbing methods refactored to use Scrubber.
## 0.3.1 (2009-10-12)
### Bug fixes:
* Scrubbed Documents properly render html, head and body tags when serialized.
## 0.3.0 (2009-10-06)
### Enhancements:
* New ActiveRecord extension `xss_foliate`, a drop-in replacement for xss_terminate[http://github.com/look/xss_terminate/tree/master].
* Replacement methods for Rails's helpers, Loofah::Rails.sanitize and Loofah::Rails.strip_tags.
* Official support (and test coverage) for Rails versions 2.3, 2.2, 2.1, 2.0 and 1.2.
### Deprecations:
* The methods strip_tags, whitewash, whitewash_document, sanitize, and
sanitize_document have been deprecated. See DEPRECATED.rdoc for
details on the equivalent calls with the post-0.2 API.
## 0.2.2 (2009-09-30)
### Enhancements:
* ActiveRecord extension scrubs fields in a before_validation callback
(was previously in a before_save)
## 0.2.1 (2009-09-19)
### Enhancements:
* when loaded in a Rails app, automatically extend ActiveRecord::Base
with html_fragment and html_document. GH [#6](https://github.com/flavorjones/loofah/issues/6) (Thanks Josh Nichols!)
### Bugfixes:
* ActiveRecord scrubbing should generate strings instead of Document or
DocumentFragment objects. GH [#5](https://github.com/flavorjones/loofah/issues/5)
* init.rb fixed to support installation as a Rails plugin. GH [#6](https://github.com/flavorjones/loofah/issues/6)
(Thanks Josh Nichols!)
## 0.2.0 (2009-09-11)
* Swank new API.
* ActiveRecord extension.
* Uses Nokogiri's Document and DocumentFragment for parsing.
* Updated html5lib codes and tests to revision 1384:b9d3153d7be7.
* Deprecated the Dryopteris sanitization methods. Will be removed in 0.3.0.
* Documentation! Hey!
## 0.1.2 (2009-04-30)
* Added whitewashing -- removal of all attributes and namespaced nodes. You know, for microsofty HTML.
## 0.1.0 (2009-02-10)
* Birthday!
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