CVE-2020-8821

MEDIUM 5.4CVE-2020-8821 · Published 12/10/2020 · updated 17/06/2026

In short

CVE-2020-8821 is a MEDIUM (CVSS 5.4) vulnerability affecting webmin (webmin).
Chance of exploitation in the next 30 days (EPSS): 79.1%, higher than 99.6% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
webmin webmin	`≤ 1.941`	No fix yet

Description

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.

References

webmin.com/security.html · Vendor Advisory

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Package

Affected versions

Patched versions

webmin

≤ 1.941

No fix yet

Description

More vulnerabilities in webmin

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