CVE-2021–43633
4 min readNov 8, 2021
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Stored XSS 😲
On the back of a recent discovery, I felt encouraged to go hunting for some more vulnerabilities in open source software. After some searching, I settled on Messaging Web Application, which is an open-source browser-based messaging application. I unpacked the source, spun up an instance of the application, and started poking at it.










