PT-2026-44031 · Webmin · Webmin

Published 2026-05-27 · Updated 2026-05-27 · CVE-2026-49103

Positive Technologies (AI Summary)

CVSS v4.0

9.4

Critical

Base vector

AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions Webmin versions prior to 2.640

Description The mailboxes component fails to safely construct a filename when saving an attachment. This issue is located in the 'mailboxes/detachall.cgi' endpoint.

Recommendations Update to version 2.640 or later.

Fix

Weakness Enumeration

CWE-24

Related Identifiers

CVE-2026-49103

Affected Products

Webmin

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-49103 · Security Note
• https://github.com/webmin/webmin/compare/2.630...2.640 · Note
• https://github.com/webmin/webmin/commit/cf432879a14568c4bb44cd2f9e5a9bd0e168edc1 · Note
• https://t.me/CVEtracker/55143 · Telegram Post