Description
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.
Published: 2026-07-29
Score: 9.4 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 29 Jul 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Axway
Axway securetransport
Vendors & Products Axway
Axway securetransport

Wed, 29 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 29 Jul 2026 14:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Server-Side Template Injection in SecureTransport's Apache Velocity mail templates
Weaknesses CWE-1336
References
Metrics cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


Subscriptions

Axway Securetransport
cve-icon MITRE

Status: PUBLISHED

Assigner: Toreon

Published:

Updated: 2026-07-29T14:48:13.505Z

Reserved: 2026-05-21T14:43:42.513Z

Link: CVE-2026-9177

cve-icon Vulnrichment

Updated: 2026-07-29T14:48:09.647Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-29T15:45:03Z

Weaknesses
  • CWE-1336

    Improper Neutralization of Special Elements Used in a Template Engine