CVE-2026-29136 MEDIUM

CVE-2026-29136: CA Notification HTML Injection

Vendor Seppmail
Product Secure Email Gateway
Weakness CWE-79 · XSS
Published April 2, 2026
Last update April 2, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to inject HTML into notification emails about new CA certificates.

Key dates

02Disclosure timeline

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