CVE-2026-29138

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.

Scoring

Severity

MEDIUM

CVSS base score

6.3

CVSS 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

EPSS probability

0.22%

CWE

CWE-90

Published

2026-04-02

Last modified

2026-04-02

Affected products

• SEPPmail Secure Email Gateway

Weakness type

• CWE-90

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