User Agent: Mozilla/5.0 (Windows NT 6.1; rv:18.0) Gecko/20100101 Firefox/18.0 Build ID: 20130116073211 Steps to reproduce: XSS (Cross site Scripting Vulnerability) exists in https://thimble.webmaker.org/ Below i have provided the detailed report of the vulnerability Please look & deploy a fix soon. Waiting for your prompt response. Actual results: POC - - Open https://thimble.webmaker.org/en-US/editor - Then on the left side of the webpage edit the default code by replacing"Make something amazing with the web" by the xss script given below. Xss script - "><img src='1.jpg'onerror=alert("XSS")> - Now after you have entered the xss script now move to the left side of the webpage & then BOOM A popup box will be shown when you click on the right side telling XSS. - Hence Proved xss vulnerability exists ! Expected results: secure ! :)
Status: UNCONFIRMED → RESOLVED
Last Resolved: 6 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 765340
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