Exploiting information disclosure vulnerabilities! 🤠

PostMessage vulnerabilities are tricky to spot... 😅 But they can also lead to numerous other vulnerabilities, such as DOM-based XSS, information disclosures, and even in-application denial-of-service attacks! 🤠

PostMessage is useful for bypassing SOP, but not just for developers... 🤠 As Intigriti 0126 wraps up, we're releasing the official write-up for January's CTF challenge! We crafted a vulnerable DeFi platform that leveraged a postMessage XSS to achieve unauthorized fund transfers! 😎

Latest Bug Bytes is live! 🚀 This month's issue is as usual packed with bug bounty tips: ✅ Hijacking AWS official GitHub repositories ✅ New anonymous bug bounty forum ✅ Finding more IDORs & SSRFs using a unique methodology ✅ New JavaScript file scanner to find hidden endpoints

Office Hours is LIVE! 🎙️ Join us NOW on Discord & X Spaces for a live Q&A with @TheSytten! 🤠 We're talking all about bug bounty hunting, methodologies, and answering your questions! 👀 Tune in now! 👇 go.intigriti.com/office-hours

The first episode of Office Hours kicks off tomorrow! 🎙️ Be sure to join us for a live Q&A with @TheSytten where we'll be talking all about bug bounty hunting! 🤠 Got questions? Drop them below! 👇 📅 15th January, 7 PM UTC 📍 Discord & X Spaces

Exploiting JWT vulnerabilities! 🤠

Information disclosure vulnerabilities seem easy to exploit... 🤠 But they're surprisingly hard to find 😓 Our latest article breaks down how to exploit information disclosure vulnerabilities in web applications, with examples to help you distinguish exploitable behavior from non-sensitive findings

We’re excited to launch our upcoming podcast series: Office Hours! 🚀 Each month, we'll sit together with bug bounty hunters & security researchers to answer YOUR bug bounty & web security-related questions on Discord & Twitter/X Spaces! 🎙️

2026 Security Forecast is out now! 📊 A lot happened in 2025, and we’ve worked hard to distill the most important key elements that will shape the future of cybersecurity in 2026 into a single unified report.

Exploiting logic flaws! 🤠

Happy New Year to our incredible hacker community and amazing partners! 🎉 Thank you for making 2025 another amazing year filled with critical findings and impactful security research. #HackWithIntigriti #BugBounty #Cybersecurity #HappyNewYear

🎉 You made it! Today marks day 31 and the final day of #BugQuest2025! If you've followed along all the way, you should be proud of your consistency and desire to learn! In the past few days, we covered CSRF vulnerabilities. Today, we're wrapping up with an interesting CORS exploitation method! 🤠

We're officially entering the final days of #BugQuest2025... let's wrap this up with a few of our best tips to help you score valid submissions! Yesterday, we covered a content type validation flaw that allowed for CSRFs to arise, even when the target only accepts JSON! 👀

CSRF vulnerabilities still persist, even in modern applications that appear to only accept data in JSON format. 🤠 This simple trick can help you bypass backends that fail to properly validate the content-type, allowing us to craft a proof of concept without triggering CORS. 😎

As surprising as it may sound, some applications are still vulnerable to Log4Shell... 🤠 In today’s BugQuest, we're setting up automated Log4Shell detection while browsing! 😎

Content-type restrictions blocking your NoSQLi? Try this trick! 🤠 Yesterday, we wrapped up a neat XXE payload that would bypass a common filter. Today, we're exploiting NoSQL injection through parameter arrays when JSON is blocked! 😎

Like many other filters, XXE defenses can also be bypassed with character encoding tricks! 🤠 Yesterday, we explored JWT key ID injection attacks. Today, we're bypassing XXE (XML External Entity) protections using UTF-7 encoding! 😎

Sometimes the best exploits require collecting all the pieces... 🤠 As Intigriti 1225 wraps up, we're releasing the official write-up for December's CTF challenge!

JWT vulnerabilities extend beyond the 'none' algorithm. 🤠 Yesterday, we bypassed JWT authentication by exploiting the 'none' algorithm. Today, we're covering another JWT attack: key ID (kid) injection! 😎

Ever tried bypassing JWT authentication with the 'none' algorithm? 🤠 After exploring WordPress vulnerabilities yesterday, today we're diving into a critical JWT misconfiguration that's surprisingly common in older applications. 😎

Over half a billion websites run on WordPress (and that's a lot of attack surface)! 🤠 WordPress powers a massive ecosystem with over 70,000 plugins, making it the perfect environment for security vulnerabilities to arise. Today, we're sharing a systematic approach to exploiting WordPress targets! 😎

Testing payment systems? You'll want to have a look at day 22 of #BugQuest2025! 🤠 After exploring payment manipulation techniques yesterday, we're sharing essential test credit cards for your e-commerce testing! 😎

We're in the final days of #BugQuest2025, and we hope you're enjoying this new series! 😎 Yesterday, we exploited e-commerce applications with currency confusion attacks. Today, we're diving a bit deeper into e-com targets & paywall bypasses! 😎

Day 20 of #BugQuest2025! 🤠 Yesterday, we bypassed file upload restrictions using a commonly forgotten evasion technique. Today, we're diving a bit deeper into exploiting e-commerce applications! 😎

Day 19 of #BugQuest2025! 🤠 Yesterday, we generated malicious PDFs to test file upload vulnerabilities. Today, we're bypassing magic byte validation to upload executable files! 😎

Day 18 of #BugQuest2025! 🤠 Yesterday, we covered a simple method for scanning internal ports to escalate SSRF vulnerabilities. Today, we're generating malicious PDFs to test file upload vulnerabilities! 😎

Day 17 of #BugQuest2025! 🤠 Yesterday, we shared a few cool blind XSS payloads for catching these seemingly hidden vulnerabilities. As we're getting more into practical exploitation techniques, today we're exploring SSRF and how to discover internal open ports. 😎

Day 16 of #BugQuest2025 (we're almost there!) 🤠 Yesterday, we showcased a simple way to test for DOM-based XSS. Today, we're sharing a collection of blind XSS payloads that you can use to catch those hidden XSS vulnerabilities! 😎

Yesterday, we covered hunting for DOM-based XSS vulnerabilities. In today's #BugQuest2025 tip, we'll be covering CSP bypasses! 🤠 Many apps implement strict CSPs to block XSS, but if they whitelist trusted domains like Google, YT, or GH, you can often bypass these restrictions using JSONP endpoints!

We're finally getting into the more practical exploitation phases of #BugQuest2025! Today, we're tackling one of the trickiest vulnerability types: DOM-based XSS! 🤠 DOM-based XSS vulnerabilities are seemingly harder to spot due to their limited visibility.

In yesterday's #BugQuest2025, we covered a simple method for finding exposed cloud buckets... Today, we're focusing specifically on Cloudflare R2 buckets and a feature that's often misconfigured: R2 dev! 🤠

Day 12 of #BugQuest2025! 🤠 Yesterday, we covered a simple method to enumerate backend technologies with high accuracy. Today, we're hunting for exposed cloud storage buckets using Google!

We know that recon can be a tedious process, but the efforts are always rewarded with interesting findings! 🤠 Today marks day 11 of #BugQuest2025, and we're sharing a simple tip to enumerate backend services.

Yesterday, on day 9 of #BugQuest2025, we shared a simple tip to elevate your privileges in services like Jira & Jenkins! Today, we're learning how to bypass WAF protections by finding origin IPs! 🤠

Hang in there! We're almost wrapping up our recon series for #BugQuest2025! 🤠 Yesterday, we shared how to find secrets in browser extensions. Today, we're continuing our recon journey and checking for something surprisingly common: open registration pages! 👀

Logic flaws can result in various impactful outcomes 🤠 But you have to learn to identify them at first... 🥲 In our latest article, we explored how to identify & exploit logic flaws, including how to measure impact and distinguish them from the non-impactful, functional bugs. Read the article! 👇

Today marks day 8 of #BugQuest2025! And we're still trying to expand our attack surface to identify vulnerabilities! 🤠 In yesterday's issue, we expanded on content discovery to identify paths, API endpoints, and files that most bug bounty hunters miss.

A full week into #BugQuest2025! 🔥 Yesterday, we shared a quick (and simple) tip to uncover hidden directories. Today, we're taking content discovery a step further by fuzzing with multiple HTTP methods! 🤠

We're now 6 days into #BugQuest2025, and we're still maintaining our focus on assets that most hunters skip! 🤠 Yesterday, we shared a method to identify hidden assets related to your target. Today, we're tackling a common mistake: ignoring subdomains that redirect! 👀

Today marks day 5 of #BugQuest2025, and we're still trying to uncover assets in the most unexpected places! 👀 Yesterday, we shared a simple method to find forgotten hosts. Today, we're using something even more hidden in plain sight: copyright notices! 🤠

We're 4 days into #BugQuest2025, and are still attempting to expand our attack surface... 🤠 Yesterday, we explored a unique method to find hidden, related assets. Today, we're diving into a goldmine that many bug bounty hunters often overlook: hosts with certificate issues! 👀

Day 3 of #BugQuest2025 is live now! Yesterday, we shared an interesting method for discovering assets that have never been tested before. 👀 Today's tip further expands on identifying hidden assets with favicon hashes! 🤠 These seamless images that appear in your tab are much more than just icons..

Day 2 of #BugQuest2025 is live now! And we knew you would make it, that's why we made today extra special! 🎁 The easiest way to find more bugs is to discover assets that have never been tested before 🤠 Virtual host fuzzing is one of the most underutilized methods for identifying such assets! 👇

Are you still searching for your first security bug? 🤠 Join us in #BugQuest2025! Starting December 1st, we'll share bug bounty tips, techniques, and resources that anyone can use, no matter your experience level, background, or skill set, for 31 days. 🎁 #BugBounty #HackWithIntigriti

You've identified a possible XSS 🤑 But CSP is in the way... 😓 What if you could just entirely bypass this CSP and execute your payload? 🤠 In our latest article, we documented multiple methods to bypass CSPs to execute malicious JS code! Read the article today (link in next post)! 👇

It's time for the monthly code challenge! The administrator interface is finally ready, and according to the development team, proper authorization has been deployed, so only administrators have access. 🤠 Can you craft a working payload proving them otherwise? 😎

In the world of JWTs, 'none' can sometimes mean everything... 🤠 As Intigriti 1125 wraps up, we're releasing the official write-up for this month's CTF challenge! We crafted a vulnerable aquarium e-commerce platform where JWT manipulation and template injection chain together for full RCE

Latest Bug Bytes is live! 🚀 This month's issue is as usual packed with bug bounty tips: ✅ Finding an RCE using AI in GitHub ✅ CORS exploitation cheat sheet ✅ Scanning codebases with AI ✅ Bypassing paywalls ✅ SSTIs in AI models + monthly hacking challenge & much more! 😎

DOM-based XSS vulnerabilities are tricky to test for, especially at scale, which often makes them go unnoticed for years... 😬 Yet, these seamless DOM-based bugs can sometimes even lead to account takeovers 👀 In our comprehensive article, we explore how you can identify and exploit this XSS type.