CVE-2026-29136: CA Notification HTML Injection
Published Apr 2, 2026
·Updated
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to inject HTML into notification emails about new CA certificates.
Affected Software
2 affected components
SEPPmail SEPPmail Secure Email Gateway<15.0.3
SEPPmail Secure Email Gateway<15.0.3
Event History
Apr 2, 2026
CVE Published
via MITRE·08:53 AM
Data Sourced
via MITRE·08:53 AM
DescriptionWeakness
Data Sourced
via NVD·09:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-29136?
CVE-2026-29136 has been classified with a medium severity rating due to its potential for HTML injection in email notifications.
2
How do I fix CVE-2026-29136?
The fix for CVE-2026-29136 is to upgrade the SEPPmail Secure Email Gateway to version 15.0.3 or later.
3
What type of vulnerability is CVE-2026-29136?
CVE-2026-29136 is an HTML injection vulnerability that affects notification emails related to CA certificates.
4
Which version of SEPPmail Secure Email Gateway is affected by CVE-2026-29136?
Versions of SEPPmail Secure Email Gateway before 15.0.3 are affected by CVE-2026-29136.
5
What can an attacker achieve with CVE-2026-29136?
An attacker can inject malicious HTML into notification emails, potentially leading to phishing or other attacks targeting users.