📰 Originally published on SecurityElites — the canonical, fully-updated version of this article.
🎯 BUG BOUNTY COURSE
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Part of the 60-Day Bug Bounty Mastery Course
Day 20 of 60 · 33% complete
⚠️ Authorised Testing Only. All clickjacking techniques in this guide must be tested only against targets covered by an explicit bug bounty programme scope or systems you own. Building PoC exploits targeting third-party applications without authorisation violates computer misuse laws. All exercises target PortSwigger Web Security Academy labs, your own DVWA, or programme-approved targets only.
Clickjacking Bug Bounty 2026 :— I once reported a clickjacking finding on an account deletion endpoint, included a two-line PoC, and received a $1,200 payout within 48 hours. The fix was adding a single HTTP response header. The vulnerability had existed for years. Dozens of hunters had tested that endpoint and passed over it because clickjacking has a reputation for being low-severity. They were looking at the wrong pages. Clickjacking on an informational page is worth nothing. Clickjacking on a page where one click deletes your account, transfers your money, or authorises a malicious OAuth app is worth as much as any other critical finding. The technique is simple. The skill is knowing which pages to frame.
🎯 What You’ll Master in Day 20
Understand exactly how clickjacking works at the browser and HTTP header level
Detect missing X-Frame-Options and CSP frame-ancestors with Burp Suite and manual checks
Identify high-value frameable actions that produce paid bug bounty reports
Build PoC exploits using raw HTML iframes and Burp Clickbandit automation
Chain clickjacking with CSRF to escalate Medium findings to Critical severity
Write bug bounty reports that get triaged and paid rather than rejected as informational
⏱️ 40 min read · 3 hands-on exercises · Day 20 of 60 #### 📋 Prerequisites — Complete Before Day 20 - Day 15: CSRF — Cross-Site Request Forgery — clickjacking chains with CSRF for the highest-impact findings; understanding CSRF is essential - Day 5: Burp Suite Deep Dive — Burp Clickbandit is the fastest PoC generator; know the tool before using it for reports - Day 18: OAuth Bug Bounty — clickjacking on OAuth authorisation pages is a high-severity chained attack vector ### 📋 Clickjacking Bug Bounty 2026 — Table of Contents 1. How Clickjacking Actually Works at the Browser Level 2. Detection — Finding Missing Framing Protection Headers 3. Which Pages Are Worth Framing (and Which Aren’t) 4. Building a Clickjacking PoC — HTML Iframe Method 5. Burp Clickbandit — Automated PoC Generation 6. Chaining Clickjacking with CSRF for Critical Severity 7. Writing Bug Bounty Reports That Get Paid Day 19 covered CSRF — cross-site request forgery — where forged requests trigger actions without user awareness. Day 20’s clickjacking is a related but distinct attack vector: instead of forging the request, you hijack the legitimate user interaction itself. The victim genuinely clicks, but they click on something different from what they believe they’re clicking on. Together, CSRF and clickjacking form the complete picture of client-side action hijacking — two techniques that every bug bounty hunter must know cold.
How Clickjacking Actually Works at the Browser Level
Clickjacking — also called UI redressing — exploits the browser’s ability to embed external pages inside iframes. An attacker creates a malicious web page that contains the victim’s target application in a transparent iframe layered over a deceptive UI. The iframe is positioned so that a sensitive button on the real application — the “Delete Account” button, the “Confirm Transfer” button, the “Authorise App” button — is precisely aligned under something the victim would genuinely want to click on the attacker’s page.
The browser renders both the attacker’s page and the iframe simultaneously. From the victim’s perspective, they see only the attacker’s page — the transparent iframe makes the underlying application invisible. When they click what appears to be the attacker’s button, the click event actually passes through to the invisible application underneath. The victim has just performed an authenticated action on the real application without knowing it. Their session cookies, authenticated state, and all permissions are fully active because it’s their browser loading the real page — the application has no way to know the click came through an iframe overlay.
The browser-level protection against this attack comes from HTTP response headers. When a server includes X-Frame-Options: DENY in its response, the browser refuses to render that page inside any iframe. X-Frame-Options: SAMEORIGIN allows same-origin frames only. The modern replacement is the Content Security Policy frame-ancestors directive — frame-ancestors 'none' blocks all framing, frame-ancestors 'self' allows same-origin. When both protections are absent, the page can be framed by any domain, and the entire clickjacking attack surface opens up.
Browser Behaviour Note: Modern browsers (Chrome 80+, Firefox 75+, Safari 14+) all honour CSP frame-ancestors over X-Frame-Options when both are present. For a finding to be completely protected, either CSP frame-ancestors must be set, or X-Frame-Options must be set, or both. Missing only one of the two is still a finding if the missing one is CSP frame-ancestors, because that’s the modern standard.
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