CVE-2026-44129CWE-1336

Server-side template injection

High · published May 8, 2026

CVSS v4.0
8.3
EPSS
1%
Percentile
53.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.3 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00735 · 53.9th percentile
Weakness
CWE-1336 · Improper Neutralization of Special Elements Used in a Template Engine
Published
2026-05-08T13:14Z
EPSS history
Timeline
  • 08 MAY 13:14Z
    Server-side template injection
    cvelistv5