CVE-2026-9177CWE-1336

CVE-2026-9177

published July 29, 2026

CVSS
9.4
EPSS
1%
Percentile
42.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
9.4 · NONE
CVSS v4.0
Not supplied
EPSS
0.00501 · 42.0th percentile
Weakness
CWE-1336 · Improper Neutralization of Special Elements Used in a Template Engine
Published
2026-07-29T18:16Z
References (3)
https://docs.hackjiji.org/blog/cve-2026-9177-ssti-in-securetransport-mft-gateway · 1c6b5737-9389-4011-8117-89fa251edfb2https://support.axway.com/news/4882/lang/en · 1c6b5737-9389-4011-8117-89fa251edfb2https://www.toreon.com/CVE-2026-9177 · 1c6b5737-9389-4011-8117-89fa251edfb2
EPSS history
Timeline
  • 29 JUL 13:46Z
    Server-Side Template Injection in SecureTransport's Apache Velocity mail templates
    cvelistv5