UpHeron
All vulnerabilities

Servers and applications

CVE-2020-8821

An Improper Data Validation Vulnerability exists in Webmin 1.941 and earlier affecting the Command Shell Endpoint. A user may enter HTML code into the Command field and submit it. Then, after visiting the Action Logs Menu and displaying logs, the HTML code will be rendered (however, JavaScript is not executed). Changes are kept across users.

Severity
Medium 5.4
Published
12 Oct 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
WebminServers and applications · cpe:a:webmin:webmin
  • Every version up to 1.941

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-8821
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-8821