CVE-2021-43721

Public Exploit

Description

Leanote 2.7.0 is vulnerable to Cross Site Scripting (XSS) in the markdown type note. This leads to remote code execution with payload : <video src=x onerror=(function(){require('child_process').exec('calc');})();>

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.43%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/leanote/desktop-app/issues/364 issue tracking exploit third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-43721?
CVE-2021-43721 has been scored as a medium severity vulnerability.
How to fix CVE-2021-43721?
To fix CVE-2021-43721, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-43721 being actively exploited in the wild?
It is possible that CVE-2021-43721 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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