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Parameter vulnerable for HTML injection but cannot exploit because of URL encoding

I found a HTML injection vulnerability but there is an issue. The following request returns the following: curl "https://redacted.com/xss/para?meter="><h1>Test\</h1>"<...
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32 votes
5 answers
5k views

Is there any security benefit from emailing a "secure link"?

Sometimes I receive email messages from organisations I'm involved with saying something like: Alice at AnyCo has sent you a secure message Along with a link to access said message. Sometimes I'm ...
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0 votes
2 answers
61 views

What are the vulnerabilities of exposing url end point param?

I have a wordpress plugin that helps create an organization chart/tree and then generates a URL where the chart is available to be viewed by the public? Inside the plugin's view in WordPress dashboard....
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1 vote
1 answer
153 views

What is a safe way to display malicious URLs in research PDFs?

Is there a convention or safeguard to show malicious URLs in a paper if they are relevant to the topic? Some PDF viewers parse the text for URLs, which makes removing the hyperlink alone insufficient. ...
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0 votes
0 answers
25 views

How can I inject JavaScript into a url whose contents will be written to the DOM in a way that it could execute?

I'm working with the API for a popular CI/CD app and I found a bug where path variables are being written directly to the DOM without being checked first. The tldr is that to access a project you go ...
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0 answers
8 views

Click on a link in a malicious email - how can i be hacked? [duplicate]

I accidentally clicked a link in a malicious email. The link has opened in my browser. I have not entered any username and password to login in. Could I have been hacked? I'd like to know what could ...
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0 votes
1 answer
56 views

Is this safe from XSS?

I need to allow a user to pass unsafe text into an iframe URL: <iframe src="https://example.com?foo=INPUT"></iframe> Inside the iFrame render code, I have this: <!doctype ...
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0 votes
1 answer
31 views

Multiple random requests for Non-Existent URLs from a single IP resulting in 404s

We sometimes get to see this behavior from a single IP address/logged in user - There are a lot of hits on our server that have .png at the end of the URL which results in a 404 because we don't have ...
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0 votes
1 answer
99 views

Making a phishing link look innocent

Situation I am learning about phishing attacks using OSINT, social engineering and some Kali tools to send a mail to a dedicated target, which contains an 'appealing' message and an ngrok link leading ...
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-1 votes
1 answer
71 views

Automated malicious links delivered with e-mail (Reddit, LinkedIn, Package) [closed]

Recently my organisation has been flooded with phishing e-mails with different approaches: pretending to be Reddit or LinkedIn information about a new follower or package delivery status/problems, etc....
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  • 353
1 vote
1 answer
127 views

Suspicious hyperlinks (all hex URLs) in e-mail

I'm communicating with a job headhunter over LinkedIn and he sent me an e-mail containing information about a position. However, I noticed that all of the hyperlinks in the e-mail (even the one on ...
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0 votes
2 answers
77 views

How big must the random string be and how long should a user activation link be available?

As I see in this answer that cryptographically secure randomness is a must in user activation urls such as: https://example.com/user-activate/^random_string^ But what are considered best practice ...
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0 votes
1 answer
102 views

Is it necessary to use cryptographically-secure randomness in order to create URLs for user activation?

Usually once you register in a website you need to visit a url like: https://example.com/user_activate/^random_string^ Does the ^random_string^ necessarily need to be cryptographically pseudorandom ...
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0 votes
0 answers
62 views

What ways a website could hack a device? [duplicate]

Is it possible that clicking a link would hack a device? For example: injecting a malicious code into the device directly from the link's host website connecting to the device remotely in a way ...
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0 votes
1 answer
94 views

Do websites send full URL over HTTP instead of HTTPS if there's an HTTPS connection?

I was learning to use wireshark when I noticed that opening a reddit url (reddit.com/r/privacy) sent a GET request for r/privacy over HTTP. Is this visible to the ISP or network sniffers? I was under ...
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1 vote
1 answer
73 views

How are validation links getting triggered by a third party?

Question: It appears that somebody can intercept and read emails that I send from my server, although I have set up 2-Factor authentification for sudo-access I log all logins on my server (Did not ...
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1 vote
4 answers
283 views

Why don't bigger companies buy similar domains to their main domain to prevent typosquatting?

One big threat out there is typosquat domains. For example instead of: steamcommunity.com some malicious actor will register the domain stearncornmunity.com and set up his fake steam login. Why do ...
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0 votes
0 answers
846 views

crl.comodoca.com is a legit crl site, how can I determine it's legitimacy when bad actors are attempting to abuse uncertainty about the site

Yesterday I noted in my router logs that my wife's laptop accessed crl.comodoca.com. She was not using the machine at the time. A quick google search found three sites claiming this was an ...
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0 votes
0 answers
73 views

Accidentally clicked on a malicious URL that on later research lead to a dead URL. Could it have done anything/were my precautions good?

First time question after lurking every so often. This issue has me a little riled, and would love to know more on how I did/if it did anything, as well as peace of mind on the subject. Today/morning, ...
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102 votes
5 answers
12k views

Can I safely preview a short link?

There are a lot of different URL shorteners out there, like Bitly or TinyURL. Besides their main purpose of shortening a link, they also: obfuscate the actual URL collect statistics about the usage ...
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0 votes
1 answer
168 views

Can someone know my browser and headset model via browsing a link?

I recently clicked on a malicious link on Reddit When I was directed to the link, it asked me to do a couple of captchas. I did them and then was redirected back to Reddit. Then he said he could see ...
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0 votes
0 answers
187 views

Is UUID enough to secure public links? [duplicate]

I send email invitations to people and each invitee gets a unique link where they can click on a button to leave a response. The data is not very secret, the worst thing that can happen is that ...
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  • 101
-1 votes
2 answers
231 views

Are the private URLs from Google Photos actually unguessable?

Maybe my math is wrong, but here it goes. If I generate a private url to share an album in Google Photos, I get something like this https://photos.app.goo.gl/***************** where the asterisks are ...
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0 votes
0 answers
90 views

Were Google's old link-sharing links not cryptographically random?

This year, Google is notifying users that shared links to their shared Google drive files will change: https://support.google.com/a/answer/10685032?hl=en The announcement begins: To make file sharing ...
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0 votes
1 answer
92 views

Algorithm to find 'owner' of an arbitrary (scammer) URL?

I'm getting a lot of scams on my mobile phone, and have just tried explaining to my wife how to find out who the 'owner' (network host name?) of a URL is before clicking on it. The basics are obvious -...
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0 votes
2 answers
260 views

Why are there so many special characters in this phishing link?

I recently looked at a spam mail I received. Generally, I'd say it was a fairly standard phishing attempt, but one thing struck me as odd: The link that victims are supposed to click looks very weird ...
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23 votes
3 answers
4k views

Browser is accepting italic/bold Unicode as part of SPAM email's URL

This is truly crazy. I received a SPAM email in which there is a URL crafted from apparent Unicode characters that surprisingly exist for italic/bold letters, which when I reported it to Google's spam ...
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0 votes
0 answers
85 views

Can hashbang (#!) URLs be used to SEO attack a website?

Apparently Google indexes hashbang URLs: https://www.youtube.com/watch?v=kDs-MufuiAg Can an attacker link to another website with fictitious hashbang-URLs and use it to hurt that website (if the ...
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0 votes
2 answers
149 views

Keyed Hash Function (HMAC) For Unguessable URLs?

I have numeric IDs that I would like to use in filenames. So for example with IDs 1, 2, 3 we would have 1.jpg, 2.jpg, and 3.jpg Now the problem is that clearly a user could just guess 4.jpg and view ...
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  • 103
2 votes
2 answers
310 views

Can a JWT be all lowercase?

I'm using JWTs as part of an URL in order to direct a user to a specific site. I could have just used a UUID, but it's nice to have an expiry date in the link, as well as knowing whom the link is ...
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  • 177
1 vote
1 answer
155 views

Some random string is appended prefixed by a DOT at the end of URL

Recently we have run some Security scan report on one of our web-application and it has one issue reported as a path-based vulnerability. The scenario is as follows. The request URL which our ...
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7 votes
1 answer
274 views

Is it safe to allow CSS filter: url(data:<SVG SOURCE HERE>)?

We have a web service where logged in users can create web page content and write custom CSS for their pages. All the HTML goes through a whitelist parser and doesn't allow any executable content. All ...
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0 votes
0 answers
88 views

Additional verification, sanitization for transcoded CJK paths in URLs

Suppose there is a file hosting server, and most filenames are strings with mostly CJK characters. Transmitting those characters in HTTP GET requests requires encoding them using UTF-8 (x3 overhead) ...
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  • 328
1 vote
0 answers
90 views

How following URL's will get open-redirection?

Reading about open-redirection from web application hackers handbook came across a test case in which the server-side is validating user supplied data that the application uses to set target for ...
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0 votes
1 answer
97 views

Link test differs from link location in plaintext view is not visible in Thunderbird

Today I noticed something strange. I got an email containing a link that links to another site than the text says. In (Simple) HTML, the review is visible when hovering over the link. However, in ...
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0 votes
0 answers
141 views

How to intercept application specific MIME types used by 3rd party (Windows) browser/plugins apps?

I'm trying to intercept and decipher scripted code that is sent to a previously installed Windows application, after a user have clicked on a particular URL in their web browser which is somehow ...
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  • 275
3 votes
1 answer
159 views

How to create custom exploit https requests to test a PHP framework [closed]

I am working on the auto-routing functionality of Codeigniter 4 and I'd like to test it by sending some nasty exploit-type HTTPS requests to make sure it properly resists mischief. E.g., request a uri ...
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1 vote
1 answer
135 views

What are the risks associate with accessing Same web application with two different URLs?

We have done vulnerability analysis with third party security team. They have mentioned one point as critical findings but i don't understand risk associated with it and suggested remedial action also ...
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  • 650
0 votes
0 answers
18 views

Security implications of protecting private data with a long URI exclusively [duplicate]

A website hosts private/personal information at a very long and unpredictable URI, yet access to this URI is completely unauthenticated. Are there any major security issues with this? I can think of ...
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26 votes
4 answers
8k views

Could receiving a URL link, not clicking on it, ever pose a security problem?

Could receiving in a text or an email, a URL link just like https://security.stackexchange.com/questions/ask of a website, which could be a pernicious one, ever pose a security problem at all? What I ...
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  • 371
21 votes
3 answers
6k views

Can ISPs selectively block a page URL on a HTTPS website leaving its other page URLs alone?

I want certain web pages blocked (within my country) by my Govt on a website that uses HTTPS on all pages. My Govt agrees that the specific URLs need to be blocked but expresses helplessness as their ...
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  • 327
0 votes
1 answer
122 views

Does forwarding a link expose my IP address? [closed]

So my friend sent me a IP grabbing link. I copied and pasted into playstation messages and sent it to my cousin. I’m wondering if my friend got my IP because I copied and pasted. I didn’t open the ...
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0 votes
1 answer
201 views

Can just clicking on a malicious link lead to hacking of my device? [duplicate]

I was not sure about it and I got some answers from internet but didn't get the logical reasoning behind it. If I just click on a malicious link it might open a new tab, or it might download something....
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  • 101
0 votes
2 answers
255 views

Is it standard practice to hide where links point in a legitimate email?

Someone in our family recently requested a password change for a website (Costco). Soon after requesting, they received an email with the standard "click the link below to reset", followed ...
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0 votes
1 answer
134 views

Is a QR code with a secret URL that changes every 5th minute secure?

I need to verify that survey respondents are in the same physical room or video chat (to prevent industry espionage). The respondents can join by scanning a QR-code that opens a URL which embeds a ...
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1 vote
0 answers
83 views

Best practices for handling links in discussion posts

Let's say I have a site like stack overflow. People post comments with - possibly - links to external sites. Is there some "standard" set of rules to make it reasonably safe for users and ...
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  • 389
-2 votes
1 answer
175 views

Can someone tell me whats the encryption in this? [closed]

khgpd://zpn.xddspbx.nrf/j/9djwth14tmct9tf/uzdwvrrnonv.tue?gz=0 This is an encrypted text and is most prob a url....pls decode it or tell me which cipher is it, this is not for any security breaches ...
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1 vote
2 answers
2k views

How to not use database identifiers in a URL in the context of a REST API

During my IT school years, I was told that including rows identifiers from a database in the resource URL, in the context of a REST API, is a bad practice. To my understanding, the rationale behind ...
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22 votes
3 answers
7k views

What's a "safe" URL shortening algorithm?

The situation: Currently, we are sending out emails and SMS to our users, which include a link to a form that each user has to fill out on a regular basis (an "eDiary"). As we need to be ...
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1 vote
1 answer
280 views

Is this "secure email" mechanism my bank wants me to use best practice?

So, yesterday I needed to sign & scan some forms for my bank, a credit union. Nothing hugely confidential, except it has some account numbers on it. But still, I was a bit concerned, so the ...
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