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.

Axway SecureTransport 5.x through 5.3 (or 5.x through 5.5 with certain API configuration) is vulnerable to unauthenticated blind XML injection (and XXE) in the resetPassword functionality via the REST API. This vulnerability can lead to local file disclosure, DoS, or URI invocation attacks (i.e., SSRF with resultant remote code execution). NOTE: The vendor disputes this issues as not being a vulnerability because “All attacks that use external entities are blocked (no external DTD or file inclusions, no SSRF). The impact on confidentiality, integrity and availability is not proved on any version.

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Vordel XML Gateway (acquired by Axway) version 7.2.2 could allow remote attackers to cause a denial of service via a specially crafted request.

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