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RCE Bug On T-Mobile's Custom Header Vulnerable Header: X-Export-Format: pdf ; Payload Tip: Always test your payloads on custom headers, as the header may be vulnerable, as in this case #BugBounty #bugbountytips #redteam #cybersecurity #Developers #pentest
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![CSS Tip 🤙 You can create this header effect using position: sticky, clip-path, and custom properties 🔥 (Video 👀) header { position: sticky; top: var(--margin); } main { clip-path: inset(var(--header) 0 0 0);) } No mix-blend-mode or animations required ✨ What's the trick then? 🧐 Duplicate the header element first. Then fix the positioning of one behind the content. header[aria-hidden] { position: fixed; top: 0; margin-top: var(--margin); } Clip the top of the content to reveal the fixed header and put a sticky-positioned header inside it that matches up in position and size ✂️ :root { --header: calc(var(--margin) + var(--font-size)); } main { clip-path: inset(var(--header) 0 0 0); } header { position: sticky; top: var(--margin); } Make your life easier with custom properties 🙌 As the body scrolls, the fixed header gets covered by the clipped content and creates the effect ✨ And because the sticky header is "stuck" it reveals itself as the content goes out of view 😍 This one's pretty cool. You can set the font color to whatever you want. At first glance, it looked like it was a mix-blend-mode thing. It doesn't have to be! Think about it and lean into z-indexing 🫶 Watch the video to get an idea of things with the exploding view 🤯 Any questions, etc. let me know! Will likely do a YouTube video on this one too! 🙏 CodePen.IO link below! 👇](https://image.24vids.com/tw-1742391976517927321/ext_tw_video_thumb/1742387238879514624/pu/img/qhFKDDbPrYvBH8B6.jpg)
![How did I test the IDOR vulnerability that leads to all user Data leakage? 1:Change the /me endpoint to /users. 2.Change the GET method to the POST method. 3.Add the Content-Type: application/json header. 4.Add this payload to the HTTP request body. {"ids":["1"]} #bugbountytips](https://image.24vids.com/tw-1675905779004583947/ext_tw_video_thumb/1675905522657099778/pu/img/xN2701328scSThUO.jpg)
![CSS Tip! 🐳 You can add little details like this scale down on scroll effect with scroll-driven animations and some sticky positioning 🤙 section { animation: scale-down; animation-timeline: view(); animation-range: exit; } @keyframes scale-down { to { scale 0.8; } ] In this smaller example, you can lean into using the position to drive an animation that scales itself down as it leaves the viewport (Seen on the Apple Vision Pro site 🍏) The nice thing here is that if you don't have scroll-driven animations, the user still gets a good experience ✨ So how do you do it? There isn't much to it header { transform-origin: 50% 0%; animation: scale-down both ease-in; animation-timeline: view(); animation-range: exit; view-timeline: --header; } @keyframes scale-down { to { scale: 0.8 0.8; } } That's it. The layout makes use of position: sticky so that the element stays in the shot whilst you scroll the page. As it leaves the page, it scales down inside the 🫶 The other smol animation here is fading the overlay on the video out 😎 Real easy. You may notice the view-timeline you defined above for the 👀 header { view-timeline: --header; } You have a pseudoelement on the text content of the header that lives inside a header > section::before { background: hsl(0 0% 0% / 0.75); opacity: 1; animation: fade both linear; animation-timeline: --header; animation-range: exit-crossing 0% exit 0%; } @keyframes fade { to { opacity: 0; } } You use a slightly smaller range on this with exit-crossing to fade it out before you start the scale down animation 🤏 That's it! Thought this smaller example would be easier to grok for people 🙏 It's also covered with JavaScript if you really want it for your sites 🤙 CodePen.IO link below 👇](https://image.24vids.com/tw-1752479022674481373/ext_tw_video_thumb/1752475535978934272/pu/img/5naYIYo6vw_NbpbO.jpg)
