JWT Editor
Summary: PortSwigger's BApp Store lists JWT Editor, a Burp Suite extension by Dolph Flynn and Fraser Winterborn, version 2.6.2, last updated 07 September 2026, for analyzing and manipulating JSON Web Tokens inside Burp. It provides editing for JWS and JWE tokens, with sign, verify, encrypt and decrypt actions, plus an Attack feature that facilitates several known attacks on JWS implementations.
Key Takeaway: A freely installable Burp extension that resigns, decrypts and attacks JWS tokens puts token forgery and signature-bypass testing in the hands of anyone who can download it, so JWT validation weaknesses in your applications are cheap to find and exploit.
Read the original at PortSwigger Research ↗
- Topics
- Vulnerabilities & Patching
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