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OpenAdvisories
High · 8.3 CVE-2026-44129 EUVD-2026-28589GHSA-wc7f-vvj8-28m9

Server-side template injection

Published May 8, 2026 · Updated May 18, 2026 · Assigned by NCSC.ch

Description

SEPPmail Secure Email Gateway before version 15.0.4 contains a server-side template injection vulnerability in the new GINA UI because an endpoint accepts attacker-controlled template, allowing remote attackers to execute arbitrary template expressions and potentially achieve remote code execution depending on the enabled template plugins.

Affected products

VendorProductAffectedFixed
SEPPmail Secure Email Gateway < 15.0.4 15.0.4

References