CVE-2026-29136CWE-79

CA Notification HTML Injection

Medium · published April 2, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
4.9
In the wild
Unconfirmed
What it is

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to inject HTML into notification emails about new CA certificates.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00160 · 4.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-04-02T08:53Z
EPSS history
Timeline
  • 02 APR 08:53Z
    CA Notification HTML Injection
    cvelistv5