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September 28, 2021

GHSL-2021-1002: Copy-paste XSS in jSuites editor - CVE-2021-41086

GitHub Security Lab

Coordinated Disclosure Timeline

Summary

Copy-paste XSS in jSuites editor

Product

jSuites

Tested Version

v4.4.2

Details

Issue: Copy-paste XSS in jSuites (GHSL-2021-1002)

The jSuites editor is vulnerable to copy-paste cross-site scripting (XSS). For this particular type of XSS, the victim needs to be fooled into copying a malicious payload into the text editor.

Proof of concept (tested on Chrome):

Note: This issue was found using the following CodeQL query

Impact

This issue may lead to XSS with user interaction

CVE

Credit

This issue was discovered by GHSL team member @erik-krogh (Erik Kristensen) using the CodeQL query contributed by @bananabr (Daniel Santos).

Contact

You can contact the GHSL team at securitylab@github.com, please include a reference to GHSL-2021-1002 in any communication regarding this issue.