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TI-2026-36440 Aliases CVE-2026-49243

Webmin: Reflected XSS in the Configuration module

Priority MEDIUM 41CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00297 22nd percentileScored 2026-11-07
Fix Fixed webmin (webmin): 2.650

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Webminwebminbefore 2.6502.650Patch availableCNA
  • webmin VendorWebmin Affected before 2.650 Fixed in 2.650 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:webmin:webmin:*:*:*:*:*:*:*:*——Webmin
  • cpe:2.3:a:webmin:webmin:*:*:*:*:*:*:*:* Versions — — ·Webmin

Remediation

  • Fix · CNA webmin (webmin) Fixed in 2.650

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-49243
  2. 2026-10-10 CVSS score changed · CNA
  3. 2026-10-10 Priority changed: LOW → MEDIUM
  4. 2026-10-13 1 new reference · CNA

References

Other 4

  • TI-2019-11278 An issue was discovered in Webmin <=1.920. KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-16770 software/apt-lib.pl in Webmin before 1.997 lacks HTML escaping for a UI command. CVSS 3.1CRITICAL 9.8
  • TI-2022-00731 Improper Access Control to Remote Code Execution in webmin/webmin CVSS 3.1HIGH 8.8
  • TI-2019-09619 In Webmin through 1.910, any user authorized to the "Package Updates" module can execute… CVSS 3.0HIGH 8.8
  • TI-2015-01866 Code injection in Usermin CVSS 3.1CRITICAL 9.9
  • TI-2022-15852 Usermin through 1.850 allows a remote authenticated user to execute OS commands via… CVSS 3.1HIGH 8.8
See all 121 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences