CVE-2026-2746 Missing PGP Signature Tag

Medium 6.9 Published 4 Mar 2026 Updated 4 Mar 2026

Attackers can send forged emails that appear verified because the gateway fails to communicate PGP signature verification results to users.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-2746?

CVE-2026-2746 is a medium-severity vulnerability in SEPPmail Secure Email Gateway, published on 4 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

SEPPmail Secure Email Gateway before version 15.0.1 does not properly communicate PGP signature verification results, leaving users unable to detect forged emails.

Weakness: CWE-347

Which versions are affected by CVE-2026-2746?

It affects 1 product.

Products include Seppmail Seppmail.

How do I fix CVE-2026-2746?

No fix has been published for CVE-2026-2746 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-2746 being exploited?

There is no known exploitation of CVE-2026-2746 in the wild and no public exploit code.

Sources

Also known as GHSA-27h3-67h6-73p2.