HTML5 Security Cheatsheet
This is the new home of the H5SC or HTML5 Security Cheatsheet. Here you will find three things:
- A collection of HTML5 related XSS attack vectors
- A set of useful files for XSS testing
- A set of formerly hidden features useful for XSS testing
The XSS Vectors
The collection of XSS vectors can be found here: https://html5sec.org/
Useful Files
We published a list of files useful for XSS testing in various situations. Currently the following files are available:
- https://html5sec.org/test.asf
- https://html5sec.org/test.avi
- https://html5sec.org/test.css
- https://html5sec.org/test.dtd
- https://html5sec.org/test.eml
- https://html5sec.org/test.evt
- https://html5sec.org/test.gif
- https://html5sec.org/test.hlp
- https://html5sec.org/test.hta
- https://html5sec.org/test.htc
- https://html5sec.org/test.html
- https://html5sec.org/test.jar
- https://html5sec.org/test.js
- https://html5sec.org/test.json
- https://html5sec.org/test.mpeg
- https://html5sec.org/test.pdf
- https://html5sec.org/test.sct
- https://html5sec.org/test.svg
- https://html5sec.org/test.swf
- https://html5sec.org/test.vbs
- https://html5sec.org/test.vml
- https://html5sec.org/test.wbxml
- https://html5sec.org/test.xbl
- https://html5sec.org/test.xdr
- https://html5sec.org/test.xml
- https://html5sec.org/test.xsl
- https://html5sec.org/test.xxe
- https://html5sec.org/test.zip
- https://html5sec.org/Test.class
Pull requests welcome, we store the files in the /attachments sub-folder.
Hidden Features
The H5SC currently has three "hidden" features
- An RSS mode to test feed readers: https://html5sec.org/rss
/rss/+/gives a unix timestamp 300 seconds in future (for ease use)/rss/+123/gives a unix timestamp 123 seconds in future/rss/1234/will serve a minimal rss feed until unix time is 1234.- A JavaScript function to return all vectors as string, isolated and numbered: Go here and execute
vectors() - All H5SC vectors in one text file for easy copy & paste
- A useful search API via GET
- Want all vectors related to
innerHTML? Open https://html5sec.org/?innerHTML - Want to link a specific vector? Open https://html5sec.org/#123
- A redirect API resolving to a URL containing XSS payload
- Data URI, no special status: https://html5sec.org/r/data/
- Data URI, status code
307: https://html5sec.org/r/data/307 - JavaScript URI, status code
301: https://html5sec.org/r/javascript/301 - Supported status codes are:
301,302,303,307,308,999 - Supported schemes are:
data,javascript,jar,script(redirecting to https://html5sec.org/%3cscript>alert(1)%3c/script>/) - More to come soon!