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CVE-2026-126780

7.2, high

webmin Improper Privilege Management Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.2, high high CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
11 Nov 2026yesterday

Description

Webmin through 2.670 contains a privilege escalation vulnerability in acl/save_group.cgi that allows delegated administrators to grant unauthorized modules by submitting arbitrary module lists in the mod parameter. Attackers with Webmin Users module access can create or edit groups holding modules like Command Shell and assign themselves membership to execute commands as root.

Details

Vendor
Webmin
Product
webmin
Weakness
CWE-269 (opens in a new tab)
Status
Deferred
Updated
11 Nov 2026
Assigner
disclosure@vulncheck.com

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References 4

Patches and fixes 2

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Webmin CVEs

Every Webmin CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2019-15107 Webmin Command Injection Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2026-126781 Webmin through 2.670 contains a users file injection vulnerability in acl/cert_issue.cgi that allows authenticated Webmin users to… 7.5, high
  • CVE-2026-125391 webmin OS Command Injection Vulnerability EPSS 1% 7.2, high
  • CVE-2026-123620 Webmin usermin OS Command Injection Vulnerability EPSS 1% 7.5, high

Beyond this page

Is CVE-2026-126780 in your network?

This page tells you how dangerous CVE-2026-126780 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-126780 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 12 Nov 2026, not the live upstream state.