CVE-2026-29137: Long Subject Untagging
Published Apr 2, 2026
·Updated
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to hide security tags from users by crafting a long subject.
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·08:42 AM
Data Sourced
via MITRE·08:42 AM
DescriptionWeakness
Data Sourced
via NVD·09:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-29137?
CVE-2026-29137 is rated as a moderate severity vulnerability due to its potential to hide security tags from users.
2
How do I fix CVE-2026-29137?
To fix CVE-2026-29137, upgrade your SEPPmail Secure Email Gateway to version 15.0.3 or later.
3
What software is affected by CVE-2026-29137?
CVE-2026-29137 affects SEPPmail Secure Email Gateway versions before 15.0.3.
4
What does CVE-2026-29137 allow an attacker to do?
CVE-2026-29137 allows an attacker to hide security tags from users by crafting a long subject.
5
What is the recommended action for administrators regarding CVE-2026-29137?
Administrators should ensure that their SEPPmail Secure Email Gateway is updated to version 15.0.3 to mitigate CVE-2026-29137.