Sampritdas8DBE39998-8EB7-46EA-997F-7B27F6F16EA0Stored XSS viva .webmv file upload
EPSS
Percentile
21.4%
Description
The application allows .webmv files to upload which lead to stored XSS
Proof of Concept
1.First, open your text file/notepad and paste the below payload and save it as XSS.webmv:
<html>
<script>alert(1337)</script>
<script>alert(document.domain)</script>
<script>alert(document.location)</script>
<script>alert(‘XSS_by_Samprit Das’)</script>
</html>
2.Then go to https://www.showdoc.com.cn/ and login with your account.
3.After that navigate to file library (https://www.showdoc.com.cn/attachment/index)
4.In the File Library page, click the Upload button and choose the XSS.webmv
5.After uploading the file, click on the check button to open that file in a new tab.
PoC URL
Impact
This allows attackers to execute malicious scripts in the user’s browser and it can lead to session hijacking, sensitive data exposure, and worse.
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