CVE-2026-56020
HIGH
NVD
CVSS Score
8.1
Severity
HIGH
Published
Jun 18, 2026
Vendor
unknown
Description
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 2.641.