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Burp Extender

Burp Extender lets you extend the functionality of Burp Suite in numerous ways.

Extensions can be written in Java, Python or Ruby.

API documentation Writing your first Burp Suite extension
Sample extensions View community discussions about Extensibility

Bug Reports

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  • Scanner errors, but logs show no errors

    Running Burp Pro 1.7.16. I'm attempting to do an active scan against selected values in a PUT request. Here is an example of the data. {"notes":"Test","userN":"pentest"} I've marked "Test" and "pentest" in Intruder ({"notes":"§Test§","userN":"§pentest§"}) and sent it to Active scan....

    1 Agent Answer    0 Community Answer
    Jan 31, 2017 11:12PM UTC
  • ca certificate

    I am attempting to install the CA Cert for Firefox via the link found here: Which is: http://burp/ This redirects me to a text site not related to burp. Where do I find the certificate, and more importantly, can that link be fixed?

    1 Agent Answer    1 Community Answer
    Jan 31, 2017 04:41PM UTC
  • Burp Proxy fails to load the page if browsed to a website with specific port # mentioned

    I tried to connect to a web server with specific port number (ex., Burp proxy failed to load and says "unable to connect". Where with same proxy configuration able to connect to same & other servers. pls help.

    2 Agent Answers    1 Community Answer
    Jan 31, 2017 10:46AM UTC
  • 'SSL Pass Through' traffic is incorrectly forwarded through an upstream proxy

    When the SSL Pass Through function is used in combination with an upstream proxy server proxy, the proxy is used incorrectly, causing the proxy to deny TLS connections that are passed through. Expected behaviour would be that Burp performs a CONNECT request to the proxy server, providing it with the target host; after receiving a 200 response, it can proceed forwarding the TLS messages to the p...

    5 Agent Answers    5 Community Answers
    Jan 30, 2017 12:09PM UTC
  • Text highlighted ... in black

    Suddenly today, when I click in any Burp window that shows text, the text gets "highlighted" in black. And it's black text. So I can't see anything. If I open a different tool in Burp, and then come back, the view is restored, but only until I click in it. Then it goes black again. Screenshot from fresh Burp Project where I only browsed to Portswigger:

    6 Agent Answers    6 Community Answers
    Jan 27, 2017 03:31PM UTC
  • Line Feed not showing in response window

    Recently we tested a website for CRLF problems, when sending GET /%23%0dSet-Cookie:%20test=test%20HTTP/1.1 ... the Server answers with an redirect to Location: xxx/#%0dSet-Cookie:... Burps Response Window is hiding the %0d (Line Feed). The 0d is visible in the Hex View. That way the tester thinks the server is not vulnerable, but it is (at least for some browsers). Tested on Debian SID (OpenJDK...

    1 Agent Answer    1 Community Answer
    Jan 26, 2017 10:18AM UTC
  • History logging disabled warning disappears after reload

    In Proxy > Options > Miscellaneous when you check Disable logging to history and site map, a nice warning appears on the top of the Proxy History window saying "History logging disabled". However if you close Burp, reopen the same project, the setting is kept (as it should be), but the warning is gone, so even though requests are not logged in the Proxy History window, there's...

    2 Agent Answers    0 Community Answer
    Jan 25, 2017 10:00AM UTC
  • Cross-site scripting (reflected) Change?

    Cross-site scripting (reflected) now shows as an informational instead of a high finding after the .16 update. Is that supposed to be the case?

    1 Agent Answer    0 Community Answer
    Jan 23, 2017 09:11PM UTC
  • Memory Leak

    Hello, I wanted to chime in to see if there is a possible memory leak with the newest version of burpsuite. I was running a scan that seemed to have been running for almost 24 hours. I soon realized that burpsuite was hitting the 15GB mark for memory consumption. As soon as I saved my data and closed down burpsuite. My memory usage went back down to about 1.5GB. So, I am now wonderi...

    3 Agent Answers    1 Community Answer
    Jan 23, 2017 08:50PM UTC
  • Smart Card not working over Remote Desktop

    We use ActivClient on our local and remote machines for Smart Card authentication. This works fine with IE and Firefox, both local and remote. When Burp is run on the remote machine, it accepts the pin code and appears to work, but never shows any certificates. Technical details that may matter: Remote host is 32-bit Running jre1.8.0_112 using acpkcs211.dll as the library Local host is ...

    1 Agent Answer    2 Community Answers
    Jan 19, 2017 05:13PM UTC