PT-2026-63809 · Everpress+1 · Mailster
CVE-2026-27064
·
Published
2026-07-22
·
Updated
2026-07-23
CVSS v3.1
9.1
Critical
| Vector | AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Mailster versions prior to 4.1.18
Description
Insufficient file type validation allows authenticated users with Editor-level access or higher to upload arbitrary files to the server. This flaw can lead to remote code execution, where an attacker executes malicious commands on the host system.
Recommendations
Update to a version newer than 4.1.17.
Fix
RCE
Unrestricted File Upload
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Weakness Enumeration
Related Identifiers
Affected Products
Mailster