Webmin: Reflected XSS in the Configuration module (CVE-2026-49243) | HOL Guard CVE

Medium · CVSS 5.1CVE-2026-49243

Webmin: Reflected XSS in the Configuration module

Answer in brief

CVE-2026-49243 records a Medium severity (CVSS 5.1) vulnerability in Webmin: Reflected XSS in the Configuration module. The current sources do not mark it as known exploited. The current feed maps webmin/webmin (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 29, 2026Updated Sep 29, 2026Source checked Sep 29, 2026First seen by HOL Sep 29, 2026Material review Sep 29, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps webmin/webmin (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
webmin/webmingeneric	<2.650	2.650

Recommended response

Check inventory. Check lockfiles and deployed manifests for webmin/webmin.
Review the reported fix. Update webmin/webmin to 2.650 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 29, 2026

Sources and claim methodology

Upstream source description

Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.650, Webmin users who click on a malicious link to their server are vulnerable to this XSS vulnerability that could be used to execute attacker-controlled commands. This issue has been patched in version 2.650.

Quoted source text, attributed separately from HOL analysis.