CVE-2026-9177
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Axway | SecureTransport | 5.5-20260326 < 5.5-20260528 | affected |
Weaknesses
- CWE-1336: CWE-1336 Improper neutralization of special elements used in a template engine
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://support.axway.com/news/4882/lang/en
- https://www.toreon.com/CVE-2026-9177
- https://docs.hackjiji.org/blog/cve-2026-9177-ssti-in-securetransport-mft-gateway
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