CVE-2026-29138 - Vulnerability Details - OpenCVE

SEPPmail Secure Email Gateway before version 15.0.3 allows attackers with a specially crafted email address to claim another user's PGP signature as their own.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

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 Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Seppmail	Seppmail Secure Email Gateway

No data.

No data.

References

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

History

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

Type	Values Removed	Values Added
Description		SEPPmail Secure Email Gateway before version 15.0.3 allows attackers with a specially crafted email address to claim another user's PGP signature as their own.
Title		PGP Decryption Sender LDAP Injection
First Time appeared		Seppmail Seppmail seppmail Secure Email Gateway
Weaknesses		CWE-90
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': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published: 2026-04-02T08:47:49.544Z

Updated: 2026-04-02T08:47:49.544Z

Reserved: 2026-03-04T09:08:03.277Z

Link: CVE-2026-29138

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-04-02T09:16:22.290

Modified: 2026-04-02T09:16:22.290

Link: CVE-2026-29138

Redhat

No data.

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