CVE-2026-29144 HIGH

CVE-2026-29144: Unicode Subject Tags

Vendor Seppmail
Product Secure Email Gateway
Weakness CWE-20 · Input validation
Published April 2, 2026
Last update April 2, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to bypass subject sanitization and forge security tags using Unicode lookalike characters.

Key dates

02Disclosure timeline

April 2, 2026 CVE published
April 2, 2026 Record updated