CVE-2026-49243Critical· 9.6▾ Midnight

Webmin is a web-based system administration tool for Unix-like servers

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-co…

▾ Midnight zone — Critical, or high with PoC / in-the-wild

Depth score53/ 100 · Moderate

impact 52.8 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Sep 29, 2026

Updated

Oct 13, 2026

CVSS

9.6

Vendor

webmin

Product

webmin

CWE

CWE-79

Depth score

53 · Moderate

EPSS

0.30% · p22

Platforms

—

Source

NVD

Vector

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

CISA SSVC

decided 2026-09-29

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 30.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 14 days

Sep 29, 2026Published
Disclosed via NVD
Sep 30, 2026EPSS first tracked
0.3%
Oct 9, 2026CVSS changed
5.1 → 9.6
Oct 9, 2026Severity changed
medium → critical
Oct 13, 2026Record revised
Last analysed / modified upstream

webmin CWE-79 #nvd #cve.org

Affected

webmin < 2.650

Full technical detail▾

Overview

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Change history

Field changes observed since this record was first indexed.

Oct 9, 2026CVSS 5.1 → 9.6
Oct 9, 2026Severity medium → critical

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org

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CVE-2026-49243Critical· 9.6▾ Midnight

Webmin is a web-based system administration tool for Unix-like servers

▾ Midnight zone — Critical, or high with PoC / in-the-wild

Depth score53/ 100 · Moderate

impact 52.8 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Sep 29, 2026

Updated

Oct 13, 2026

CVSS

9.6

Vendor

webmin

Product

webmin

CWE

CWE-79

Depth score

53 · Moderate

EPSS

0.30% · p22

Platforms

—

Source

NVD

Vector

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

CISA SSVC

decided 2026-09-29

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 30.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 14 days

Sep 29, 2026Published
Disclosed via NVD
Sep 30, 2026EPSS first tracked
0.3%
Oct 9, 2026CVSS changed
5.1 → 9.6
Oct 9, 2026Severity changed
medium → critical
Oct 13, 2026Record revised
Last analysed / modified upstream

webmin CWE-79 #nvd #cve.org

Affected

webmin < 2.650

Full technical detail▾

Overview

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Change history

Field changes observed since this record was first indexed.

Oct 9, 2026CVSS 5.1 → 9.6
Oct 9, 2026Severity medium → critical

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org