CVE-2026-56020

CVE-2026-56020CVE-2026-56020

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.

Scoring

CVSS 8.1 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Last modified2026-06-18
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.