CVE-2026-9177
CriticalCVSS 9.4Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
Axway SecureTransport version 5.5-20260326 and earlier has a Server-Side Template Injection (SSTI) vulnerability in the email template functionality. An attacker with admin privileges can inject Java code executed during template rendering, leading to full host compromise.
Risk Assessment
An attacker with admin privileges can gain full control over the server, resulting in loss of confidentiality, integrity, and availability.
Recommendation
Update Axway SecureTransport to version 5.5-20260528 or later.
Original NVD description (English source)
A Server-Side Template Injection (SSTI) vulnerability was identified in the mail template functionality of the Axway SecureTransport product in version 5.5-20260326. This flaw allows an attacker with admin privileges to inject arbitrary Java code expressions, which are executed server-side when the template is rendered (i.e., during email sending). Successful exploitation of this flaw allows an attacker to execute arbitrary code on the server that results in full host compromise. This issue affects all Axway SecureTransport versions prior 5.5-20260528 update.