CVE-2026-29143
Critical · 9.1CVSS
9.1
EPSS
0.4%
Published
Apr 2, 2026
CISA due date
—
The record
SEPPmail Secure Email Gateway before version 15.0.3 does not properly authenticate the inner message of S/MIME-encrypted MIME entities, allowing an attacker to control trusted headers.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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