CVE-2026-44127 PUBLISHED

Local File Inclusion (LFI) and Arbitrary File Deletion

Assigner: NCSC.ch
Reserved: 05.05.2026 Published: 08.05.2026 Updated: 08.05.2026

SEPPmail Secure Email Gateway before version 15.0.4 contains an unauthenticated path traversal vulnerability in the identifier parameter of /api.app/attachment/preview that allows remote attackers to read arbitrary local files and trigger deletion of files in the targeted directory with the privileges of the api.app process.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS Score: 8.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	SEPPmail AG
Product	Secure Email Gateway
Versions	Default: unaffected affected from 0 to 15.0.4 (excl.)

References

https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#security

Problem Types

CWE-73 External control of file name or path CWE

Impacts

CAPEC-139 Relative Path Traversal