webmin vulnerabilities (CVE)

CVE records published for webmin, newest first. Follow to get an email when a new one appears.

12 results
9.6Critical
CVE-2026-49243

Webmin: Reflected XSS in the Configuration module

webmin webmin

Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.650, Webmin users who click on a malicious link to their server are vulnerable to this XSS vulnerability that could be used to execute attacker-controlled commands. Thi…

5.3Medium
CVE-2026-42210

Webmin 2FA requirement bypass

webmin webmin

Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.640, for Webmin accounts that require a second authentication factor (typically TOTP), an attacker with knowledge of the username and password can bypass the 2FA requir…

8.1High
CVE-2026-56020

Webmin HTTP header authentication bypass

Webmin Webmin

The Webmin HTTP server (miniserv.pl) allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.202.

5.3Medium
CVE-2026-56022

Webmin MFA bypass

Webmin Webmin

Webmin accepts basic authentication without session cookies when an attacker provides the 'User-Agent: webmin' header, allowing bypass of additional MFA requirements. Fixed in 2.640.

9.4Critical
CVE-2026-49103
Webmin Webmin

Webmin before 2.640 does not safely construct a filename for saving of an attachment within the mailboxes component. This occurs in mailboxes/detachall.cgi.

6.1Medium
CVE-2026-49102
Webmin Webmin

Webmin before 2.640 allows mailboxes/detach.cgi XSS via an SVG document attachment that is viewed in the mailboxes component, because image/svg+xml is used instead of a safe type (e.g., text/plain).

5.4Medium
CVE-2026-22678

Webmin < 2.641 Stored XSS via System and Server Status

Webmin Webmin

Webmin before 2.641 contains a stored cross-site scripting vulnerability in the email template description field of the System and Server Status module that allows low-privileged authenticated attackers to execute arbitrary JavaScript in the browser context o…

8.5High
CVE-2025-67738
Webmin Webmin

squid/cachemgr.cgi in Webmin before 2.600 does not properly quote arguments. This is relevant if Webmin's Squid module and its Cache Manager feature are available, and an untrusted party is able to authenticate to Webmin and has certain Cache Manager permissi…

7.1High
CVE-2025-61541
webmin webmin

Webmin 2.510 is vulnerable to a Host Header Injection in the password reset functionality (forgot_send.cgi). The reset link sent to users is constructed using the HTTP Host header via get_webmin_email_url(). An attacker can manipulate the Host header to injec…

9.9Critical
CVE-2015-2079
Usermin Usermin

Usermin 0.980 through 1.x before 1.660 allows uconfig_save.cgi sig_file_free remote code execution because it uses the two argument (not three argument) form of Perl open.

1.6%EPSS