CVE-2026-8811 HIGH

CVE-2026-8811: Path traversal in PDF generation module

Vendor Seppmail Ag
Product Secure Email Gateway
Weakness CWE-22 · Path traversal
Published June 18, 2026
Last update June 18, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

SEPPmail versions before 15.0.5 allow improper handling of attachment filenames during encrypted PDF generation. An attacker can exploit this to create new files outside the intended directory, potentially placing files in web-accessible locations.

Key dates

02Disclosure timeline

June 18, 2026 CVE published