CVE-2026-9177 — Server-Side Template Injection in SecureTransport's Apache Velocity mail templates
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…
Published: 2026-07-29 · CVSS: 9.4 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7