Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-49243

CVE-2026-49243CRITICAL

Webmin: Reflected XSS in the Configuration module

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  C  H  H  H    9.6   .0030   20.9     —

AFFECTED
  Product  Versions   Fixed
  webmin   < 2.650 –  —

TIMELINE
  May 28  Reserved by GitHub_M
  Sep 29  Published (CNA: GitHub_M)
  Oct 9   RESCORED — CVE-2026-49243 (webmin). CVSS 5.1 → 9.6 (NVD).

CWE-79 · CNA: GitHub_M · CVSS v3.1 · 4 references · NVD status: Deferred

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 28, 2026	Reserved	Reserved by GitHub_M
September 29, 2026	Published	Published (CNA: GitHub_M)
October 9, 2026	RESCORED	RESCORED — CVE-2026-49243 (webmin). CVSS 5.1 → 9.6 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
webmin	webmin	—	< 2.650	—

Weaknesses

CWE-79

References (4)

Authoritative record: CVE-2026-49243 at cve.org

Vendors: webmin

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-49243 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.