CVE-2026-29141 - Vulnerability Details - OpenCVE

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to bypass subject sanitization and forge tags such as [signed OK].

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact High

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00085.

Exploitation none

Automatable yes

Technical Impact partial

Vendors	Products
Seppmail Subscribe	Seppmail Secure Email Gateway Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure-1503

History

Thu, 02 Apr 2026 15:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 02 Apr 2026 09:00:00 +0000

Type	Values Removed	Values Added
Description		SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to bypass subject sanitization and forge tags such as [signed OK].
Title		Bounded Subject Tag Sanitization
First Time appeared		Seppmail Seppmail seppmail Secure Email Gateway
Weaknesses		CWE-20
CPEs		cpe:2.3:a:seppmail:seppmail_secure_email_gateway::::::::
Vendors & Products		Seppmail Seppmail seppmail Secure Email Gateway
References		https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure-1503
Metrics		cvssV4_0 `{'score': 7.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published: 2026-04-02T08:34:32.933Z

Updated: 2026-04-02T14:40:50.107Z

Reserved: 2026-03-04T09:08:07.342Z

Link: CVE-2026-29141

Vulnrichment

Updated: 2026-04-02T14:40:39.987Z

NVD

Status : Received

Published: 2026-04-02T09:16:22.793

Modified: 2026-04-02T09:16:22.793

Link: CVE-2026-29141

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-20

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