Cyber Risks · PortSwigger Research

Custom Send To

Summary: PortSwigger's BApp Store lists a Burp Suite extension called Custom Send To, authored by Thomas Engel, that adds a configurable "Send to..." context menu to Burp, with entries added, edited, removed, and reordered from a dedicated tab. The extension's own security notes warn that executing commands from untrusted input risks command injection, especially with the %S placeholder, and recommend enabling the Show preview option and reviewing commands before execution.

Why it matters: The extension's author flags command injection as a live risk when the %S placeholder is used, so anyone who installs it and skips the preview window is handing untrusted input a path to command execution inside a tool your testers run daily.

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Topics
Vulnerabilities & Patching
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