Medium 5.3Published Jul 20, 2026

CVE-2026-42210Webmin 2FA requirement bypass

Updated under an hour ago (Oct 27, 2026, 7:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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 requirement by using Basic authentication. Webmin is a web-based system administration tool for Unix-like servers. As a workaround, apply the patch from commit da18a16c84ae5c0b78cad79609cb0efb174000ec manually.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-287
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 20, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

webmin webmin webmin:webmin (from the name)	before 2.640	CNA record

References

References

https://github.com/webmin/webmin/security/advisories/GHSA-qpww-fff2-6fgv	x-refsource-confirm
https://github.com/webmin/webmin/commit/da18a16c84ae5c0b78cad79609cb0efb174000ec	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.