CVE-2026-29141 Bounded Subject Tag Sanitization
Attackers can bypass subject sanitization to forge security tags like [signed OK] in SEPPmail Secure Email Gateway.
- 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-2026-29141?
CVE-2026-29141 is a high-severity vulnerability in SEPPmail Secure Email Gateway, published on 2 Apr 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 15.0.3 allows an attacker to bypass subject sanitization and forge tags such as [signed OK].
Weakness: CWE-20
Which versions are affected by CVE-2026-29141?
It affects 1 product.
Products include Seppmail Secure Email Gateway.
How do I fix CVE-2026-29141?
No fix has been published for CVE-2026-29141 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-29141 being exploited?
There is no known exploitation of CVE-2026-29141 in the wild and no public exploit code.
Other vulnerabilities in SEPPmail Secure Email Gateway
Sources
Also known as GHSA-239h-g863-fm9x.