CVE-2026-29135: Webmail Password Tag Sanitization Bypass
Published Apr 2, 2026
·Updated
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to craft a password-tag that bypasses subject sanitization.
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·08:31 AM
Data Sourced
via MITRE·08:31 AM
DescriptionWeakness
Data Sourced
via NVD·09:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-29135?
CVE-2026-29135 has been classified with high severity due to its potential for unauthorized access through password tag sanitization bypass.
2
How do I fix CVE-2026-29135?
To fix CVE-2026-29135, users must upgrade the SEPPmail Secure Email Gateway to version 15.0.3 or later.
3
What systems are affected by CVE-2026-29135?
CVE-2026-29135 affects SEPPmail Secure Email Gateway versions prior to 15.0.3.
4
What type of attack does CVE-2026-29135 enable?
CVE-2026-29135 enables an attacker to bypass subject sanitization through specially crafted password tags.
5
Is CVE-2026-29135 known to be actively exploited?
As of the latest information, there are no reported cases of active exploitation of CVE-2026-29135.