CVE-2026-49103 CRITICAL

CVE-2026-49103

Vendor Webmin

Product Webmin

Weakness CWE-24

Published May 27, 2026

Last update May 27, 2026

View on NVD All CVEs

CVSS base score

9.4/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality —

Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

What the vulnerability does

01Description

Webmin before 2.640 does not safely construct a filename for saving of an attachment within the mailboxes component. This occurs in mailboxes/detachall.cgi.

Key dates

02Disclosure timeline

May 27, 2026 CVE published

May 27, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-49103 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/24.html

Related vulnerabilities

CVE-2026-49103

01Description

02Disclosure timeline

03References

04Related CVE