Description

SAP Integration Suite does not sufficiently validate XML documents accepted from untrusted sources in certain internal components. An attacker with low privileges could submit specially crafted XML payloads containing malicious external entity declarations. Successful exploitation could allow the attacker to read sensitive file contents from the server and expose them through monitoring or logging output, resulting in a high impact on confidentiality. It could also lead to resource exhaustion, causing a low impact on availability. There is no impact on integrity.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.5",
  "pubDate": "2026-09-08T01:17:54.430Z",
  "pubdate": "2026-09-08T01:17:54.430Z",
  "executiveSummary": "SAP Integration Suite contains a critical security vulnerability involving the improper validation of XML documents. The flaw is classified as an XML External Entity (XXE) injection vulnerability occurring within internal processing components.\nThe vulnerability enables an attacker with low-privileged access to submit maliciously crafted XML payloads. By defining external entities that reference sensitive files on the host server, an attacker can coerce the XML parser to include unauthorized file contents in the application's response, monitoring, or logging mechanisms.\nThe primary impact is a severe breach of confidentiality, allowing for the unauthorized disclosure of sensitive server-side information. Additionally, the vulnerability can be leveraged to conduct denial-of-service attacks through resource exhaustion, resulting in a degradation of system availability. There is no impact on data integrity, as the vulnerability does not inherently facilitate the modification of system files or application logic.\nSuccessful exploitation requires that an attacker has low-level authentication to interact with the vulnerable internal components. Organizations using SAP Integration Suite should treat this as a high-priority risk, particularly where XML-based interfaces are exposed to untrusted user input.",
  "technicalDetails": "The root cause of this vulnerability is the improper configuration of the XML parser within specific internal components of the SAP Integration Suite. Specifically, the parser is configured to permit the processing of Document Type Definitions (DTDs) and the resolution of external entities without sufficient validation or security constraints.\nIn a standard XML parsing workflow, the parser processes the DTD to define the structure of the document. When XXE protection is absent, the parser will resolve URIs specified within the 'ENTITY' declaration. An attacker exploits this by injecting a malicious payload into an XML-based request. A typical payload involves defining a system entity that points to a sensitive local file path (e.g., /etc/passwd or application configuration files) using the SYSTEM identifier.\nThe attack flow proceeds as follows: 1) The attacker crafts an XML request containing an external entity definition pointing to a target file. 2) The attacker submits this payload to an endpoint within the SAP Integration Suite that parses XML data. 3) The internal component processes the XML document, encounters the malicious entity, and attempts to retrieve the content from the specified URI. 4) The parser reads the file content from the underlying filesystem. 5) The application, failing to sanitize the input or restrict the parser's capabilities, inadvertently includes the contents of the target file in subsequent logging, monitoring outputs, or the direct HTTP response.\nFurthermore, the parser can be forced to resolve external entities that lead to infinite loops or resource-intensive URI resolutions, which leads to CPU or memory exhaustion. This behavior effectively facilitates a local denial-of-service condition affecting the availability of the integration services.\nThe exploitation of this flaw does not require administrative privileges, though it does necessitate low-level access to the vulnerable system interfaces. Because the vulnerability resides within the internal components of the SAP Integration Suite, the impact is strictly confined to the information disclosure pathways exposed by the application's feedback loops and logging infrastructure. The failure to disable DTD processing and external entity resolution remains the primary vector for this security compromise."
}