Forcing the app to download malicious assets or exposing local app data to third-party applications. 3. The Lifecycle of a CapCut Bug Bounty Fix
Attackers could craft malicious templates that execute arbitrary JavaScript in the victim's browser, leading to session hijacking. 3. Server-Side Request Forgery (SSRF)
ByteDance security engineers verify the report to ensure the issue is valid, reproducible, and poses a risk. capcut bug bounty fix
# Conceptual Server-Side Authorization Check def get_user_project(request, project_id): user_id = request.session.get('user_id') project = database.fetch_project(project_id) if not project: return error_response("Project not found", 404) # Strict ownership validation if project.owner_id != user_id: return error_response("Unauthorized access", 403) return success_response(project.data) Use code with caution. Fixing XSS: Strict Input Sanitization and CSP
As CapCut cements its place as one of the world’s most popular video editing apps—with over 500 million mobile downloads—it has become an increasingly attractive target for security researchers and malicious hackers alike. From account takeover vulnerabilities to server-side request forgery (SSRF), security flaws in CapCut could expose millions of users’ personal data, templates, and creative assets. Forcing the app to download malicious assets or
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While ByteDance doesn't publish a fixed disclosure timeline, industry best practices suggest: Fixing XSS: Strict Input Sanitization and CSP As
If you are a developer fixing a reported bug:
If you are actively hunting on the CapCut program via platforms like ByteDance SRC or HackerOne, follow this structured testing methodology: