Medium 5.3Published Jun 18, 2026

CVE-2026-56021Webmin information disclosure via regex pattern

Updated under an hour ago (Oct 28, 2026, 10:30 AM ET)

Does this affect you?

It affects Webmin. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Webmin

Exploited in the last 30 days

Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-185, CWE-777
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: cisa-cg
NVD analysis: Analyzed
Record last updated: Jun 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Webmin Webmin webmin:webmin (from the name)	all versions	CNA record
webmin webmin webmin:webmin	before 1.290	NVD

References

References

https://webmin.com/security/#webmin-prior-to-2641	release-notes, vendor-advisory
https://github.com/webmin/webmin/releases/tag/2.641	release-notes, product
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-169-02.json	vdb-entry
https://www.cve.org/CVERecord?id=CVE-2026-56021	vdb-entry

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.