Questions tagged [reflected-xss]

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33
votes
8answers
7k views

Is reflected XSS still relevant today?

I've been learning more about XSS (for the unfamiliar, Excess XSS is a great resource). I opted to get my hands dirty and give Reflected XSS a try on a local environment. I set up a very simple ...
11
votes
1answer
425 views

How to report a vulnerability in a site that wants to call the FBI?

I was browsing a site recently that looked like it had been designed in 2000. However, this site has a good Alexa rank and a fairly active online community. For the protection of the site, I will not ...
6
votes
2answers
4k views

XSS inside anchor tag (<a>) without user interaction?

Is it possible to inject a payload inside <a> tag such that the script runs without user interaction? The injection is inside the href attribute. I can inject onmouseover or onclick attributes, ...
6
votes
1answer
4k views

XSS in textarea when < and > are not allowed?

I am trying to perform XSS on the injection point marked with XXXX here: <div> <textarea name="billing[something]" id="billing-something" rows="1" type="phone" title="something" ...
5
votes
1answer
116 views

What was the real reason for dropping reflected-xss directive from CSP?

There were two response headers which could be set by servers to instruct browsers to enable heuristics based reflected XSS detection and prevention in the past. X-XSS Protection: 1; mode=block ...
4
votes
3answers
1k views

Is this code vulnerable to Reflected XSS?

I'm doing a pentest and came by this code: (function() { var subdomain = (function() { var query = /[?&]css=([^&#]*)/i.exec(window.location.search); if(...
4
votes
1answer
5k views

How to perform XSS in hidden HTML input fields using accesskey?

I am trying to insert a XSS payload into a hidden HTML input field. I know it works with a script tag like below, but I am looking for other alternatives. <input type="hidden" name="date" value=""/...
4
votes
1answer
5k views

Bypassing browsers URL encoding to do reflected XSS from query parameter?

I tried to get reflected XSS in vulnerable website with a request to the following URL: https://vulnerable.website/dir/dir?param1=test"><svg/onload=alert(1)> The browser URL encode the ...
3
votes
1answer
142 views

Why the following XSS vectors work without closing bracket?

The following XSS injections will execute without the accompanying closing tag (see this demo): <body/onload=alert(1) <svg/onload=alert(1) <iframe/onload=alert(1) I just need to know why ...
3
votes
1answer
1k views

Impact of the response content-type on the exploitability of XSS

I've come across an API of a web application I'm testing, which reflects with unescaped, unencoded, user-controlled data for some requests. However, the response includes the header Content-Type: ...
3
votes
1answer
84 views

What are some ways to execute a reflected XSS attach

I was wondering how many different methods exist for executing XSS attacks. In just about every demonstration I see, the attack is triggered in one of the below 3 ways: By entering the script into ...
3
votes
0answers
104 views

Is it possible to exploit this cors?

I found an xss on subdomain.example.com and i verified that the domain api.example.com accepts subdomain.example.com as valid origin. Can i exploit this as cors by inserting a CORS script in subdomain....
2
votes
1answer
4k views

XSS - double quote and backslash escaping

I'm currently testing my own XSS filter and don't know if I thought everything through, so I need some advice. Let's say my code looks like this: <script> var test = {src: "test", layer: {"...
2
votes
2answers
2k views

What are the common features to identify XSS attack from Apache log file?

I have tried some XSS vulnerability on web application such as webgoat, OWASP mutillidae, bWAPP. I want to know the features/keywords/footprints of cross site scripting attack in apache log file and ...
2
votes
1answer
298 views

Are unescaped backslashes dangerous in terms of XSS?

I thought the \ (backslash) character was a dangerous character that you needed to filter out/properly encode to protect against XSS attacks (OWASP says so, too), and I still do, but why? I found a ...
2
votes
2answers
10k views

XSS with URL encoding

If a website URL gets encoded then is the website still vulnerable to XSS or no? For example, if I try <script>alert(1)</script> and the site URL encodes my payload to %3Cscript%3Ealert(1)...
2
votes
1answer
264 views

Why does Chromes XSS filter block injection into HTML element, but not into attribute?

I have this vulnerable code which takes a GET parameter, and puts it inside a HTML element (h1) as well as inside a HTML attribute (data-text): $data = $_GET["payload"]; echo "<h1>" .$data. "&...
2
votes
2answers
1k views

Reflected XSS only works through Burp Repeater because of URL encoding

I am able to get reflected XSS through burp repeater using a GET request. I then click on show response in browser and I am able to get an XSS alert. But when I manually go to the URL in my browser ...
1
vote
2answers
1k views

Why is unsanitized output from ajax request bad?

I know what I just described is a reflected XSS vulnerability. What I can't figure out is why it is a vulnerability. Because the way I see it, a user can't be directed to the attacker's content ...
1
vote
1answer
7k views

Bypassing <, > XSS filter

<img class="avatar" src="MY INPUT SPACE"> I am trying to bypass an XSS filter but it is not working since given <, > are filtered. I feel like it I could break it since only these two ...
1
vote
1answer
2k views

How to bypass response Location in order to obtain content XSS?

In some basic steps: POST Request containing a photo with multipart/form-data. HTTP/1.1 302 Found respond with redirect back to formular Redirect to initial formular. In case 1 we are able to ...
1
vote
2answers
378 views

Is all reflected XSS bad?

I stumbled on a site today that was vulnerable to XSS. I was able to get an alert box to display via an input box and some JavaScript. I was about to report this to the site owner, but I realized ...
1
vote
0answers
153 views

CSS Injection without colon

I'm looking for a way to create a CSS injection proof-of-concept. I can insert the following and it gets reflected in the browser: <style>body{background-color:red}</style> The only ...
1
vote
0answers
1k views

How can I steal all cookies from reflected XSS?

I just found a website with a XSS vulnerability. When I visit the following URL, a pop up occurs: https://example.com/article/HALLOWEEN"><script>alert(1);</script> I have a ...
0
votes
1answer
1k views

How does OWASP ZAP find Reflected XSS?

What I'm doing: I'm using OWASP Zap to find vulnerabilities in a site (I have the owner's consent) and Zap came up with a Reflected XSS Vulnerability after I did an active scan on a POST request. It ...
0
votes
1answer
4k views

How to exploit XSS in POST request when parameter is going in body?

As per my understanding, while exploiting an XSS (in GET request) the attacker will craft the malicious link with a JS payload and will send it to the victim. When the victim clicks on the link the ...
0
votes
2answers
11k views

Reverse shell using XSS [closed]

If a certain web application is vastly vulnerable to XSS attacks, is it possible for the attacker to gain a reverse shell using an certain XSS payload without uploading any mallicous files to the web ...
0
votes
2answers
183 views

XSS vulnerability through burp suite

I am getting a XSS vulnerability through burp suite but when I inject script manually I don't get the XSS vulnerability. Is this a reportable vulnerability?
0
votes
1answer
57 views

can you have reflective xss through a POST parameter?

While testing a dummy app, I noticed that the XSS done through POST parameters was getting stored in the form (the alert('XSS') would show every time I loaded the page where I had injected the payload)...
0
votes
1answer
1k views

What is the XSS auditor in Chrome/Firefox and how do I find bypasses?

I've been doing a lot of bug bounties lately and although I've been gaining reputation and experience, I never seem to find XSS even in private programs. Items are always being reflected as HTML. It ...
0
votes
2answers
2k views

Why is an XSS payload in the address bar executed?

I was playing with OWASP Mutillidae II and in one page I've found a vulnerability. In the address bar I've wrote something like this: 127.0.0.1/.../?page=text-file-viewer.php/"><script>...
0
votes
2answers
117 views

“Reflected XSS”-like attack on chatbot AI

This is a theoretical question. I just watched a certain video in which the author apparently unmasks a chatbot AI that is likely trying to harvest data and spread influence in a cult-like manner on a ...
0
votes
2answers
121 views

Is acquiring the csrftoken alone sufficient for performing any security exploits?

I have confirmed the presence of reflected XSS vulnerability in my website and I see the csrftoken present in one of the cookies when injecting a document.cookie in javascript. We don't have the user-...
0
votes
1answer
806 views

Bypassing htmlspecialchars() for XSS (Reflected) and using an event handler is not an option in this case

I am trying to bypass high security XSS on DVWA. So the vulnerable code(I highly doubt that is it really vulnerable?) is:- <?php if(!array_key_exists ("name", $_GET) || $_GET['name'] == NULL || $...
0
votes
1answer
264 views

XSS triggered but chrome didn't show popup. What exactly was going on?

Related to my previous question on XSS in canonical link. At the beginning I turned off Chrome's XSS auditor and tried executing XSS with just onload event using following payload which did not ...
0
votes
1answer
215 views

XSS vulnerability in display message

I have a webpage in which Email is given as input. It will then display "your email is abc@xyz.com". I am then changing the email in URL to <script>alert(1)</script> and send tbe request ...
0
votes
1answer
266 views

Reflected XSS in multiline script block

I am trying to exploit a reflected cross site scripting in a GET request where the reflection is in the first multi line script block. It seems I can use every character but <, > and " and the ...
0
votes
1answer
448 views

JS bug is stopping xss payload to exeute

The XSS vector is at the * but the function issue_type is not declared hence my payload is not getting executed. following is the instance of the vulnerable code:- <select name="sub_subissues" ...
0
votes
1answer
47 views

Question about XSS

I'm new to penetration testing and I found a Reflected XSS vulnerability on the website I'm working on. But the thing is when I submit the form the website automatically redirect me to www.website....
0
votes
1answer
44 views

Reflected XSS which only displays in the input [closed]

I am trying to execute an XSS in an HTTP GET request,but it just displays the input without running the script. I checked in BurpSuite and I see it added my input to referer: url and then my input. ...
0
votes
1answer
2k views

Exploit: Send cookie to another server from url

I'm testing a web application and found that url contains "redirect=" where it navigates to new location once logged in. http://IPAddress/?redirect_uri=test I'm trying to exploit the cookie using ...
0
votes
1answer
52 views

Demonstrating reflected XSS with GET Parameter and URL encoding

A client is developing a website which is vulnerable to reflected XSS through a GET parameter: https://example.com/vulnerable-url?")||true)alert("XSS");</script> I would like to demonstrate ...
0
votes
0answers
18 views

xss filter bypass <>& [duplicate]

i've been trying to bypass an xss filtering system but i failed to exploit it , i've searched alot but couldn't find anything that works so i thought i should ask u guys i've entered all the ...
0
votes
0answers
43 views

how to bypass URL encoding on XSS [duplicate]

I typed following script on the search input on the website alert() but website converted this script into &lt;script&gt;alert()&lt;/script&gt; in HTML content, is there any ...
0
votes
0answers
112 views

Finding hidden parameters manually for XSS

I am researching about XSS and Google helped me a lot about learning like how to bypass XSS filters, POST and GET based XSS . I am really curious to know how to find hidden parameters manually for ...
0
votes
0answers
275 views

xsser fails to find easy XSS vulnerability (Web For Pentester)

I tried to evaluate the effectivity of xsser (http://xsser.03c8.net) by letting it run against the "Web For Pentester" XSS tests (https://pentesterlab.com/exercises/web_for_pentester/course) is it ...
-1
votes
1answer
639 views

Bypass this unique XSS filter?

I found a website that reflected back the user inputs. But the problem is when I inject this payload <svg/onload=alert(1)> I get an error. But when I use this payload <%20svg/onload=alert(1)&...
-1
votes
2answers
164 views

XSS vulnerabillity in response

I'm checking for reflective XSS in a website and have noticed that the website uses the concept of HTML escaping, so basically any special/invalid characters are escaped. So injecting is not that easy....
-1
votes
1answer
260 views

Xss filtering of single quote [closed]

Any hint Here Bypass filtering of single quote http://leettime.net/xsslab1/stage--08.php
-2
votes
1answer
302 views

How to ensure the third party CDN is secure (and stays secure)?

Most of the modern applications are using CDN for third party libraries. For example, let's say I use xxxv2.min.js from cdn.example.com/xxxv2.min.js Everything is good, until the day that company has ...