Description

SAP S/4HANA (Intercompany Matching and Reconciliation) allows a low-privileged authenticated user to inject malicious input into certain functions, which may be processed by the database without proper validation. This could allow the user to access sensitive information, resulting in high impact on confidentiality, with no impact on integrity and availability of the application.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.5",
  "pubDate": "2026-09-08T01:17:30.997Z",
  "pubdate": "2026-09-08T01:17:30.997Z",
  "executiveSummary": "This vulnerability concerns an improper input validation flaw within the Intercompany Matching and Reconciliation module of SAP S/4HANA.\nThe vulnerability is classified as an SQL injection, which allows a low-privileged authenticated user to submit malicious input that is processed directly by the backend database without sufficient sanitization or parameterization.\nThe primary risk implication is a significant breach of data confidentiality, as the injected queries enable unauthorized retrieval of sensitive information from the underlying database.\nThe exploit requires the attacker to hold valid, low-privileged authentication credentials for the SAP S/4HANA environment.\nWhile the vulnerability does not directly impact system integrity or service availability, the ability to exfiltrate sensitive data poses a severe security risk to organizational information assets.\nThis flaw emphasizes the necessity for rigorous server-side input validation and the mandatory use of prepared statements to prevent untrusted user data from influencing SQL command structure.",
  "technicalDetails": "The vulnerability resides in the Intercompany Matching and Reconciliation component of SAP S/4HANA, specifically within functions where user-supplied input is dynamically concatenated into SQL queries.\nThe root cause is the failure to utilize parameterized queries or binding variables, which allows an attacker to break the context of the intended SQL command by injecting malicious SQL syntax.\nThe attack flow begins when a low-privileged authenticated user interacts with the affected application interface. By providing specially crafted strings in input fields mapped to vulnerable functions, the attacker introduces SQL control characters (e.g., quotes, semicolons, comment markers) into the query logic.\nBecause the application processes this input without proper validation or escaping, the database engine interprets the malicious input as part of the executable command rather than mere data. This enables the attacker to manipulate the query structure, potentially bypassing access control lists or retrieving data from unauthorized tables.\nThe post-exploitation impact is focused on the confidentiality of the database records. By leveraging the injection, the attacker can systematically exfiltrate sensitive data sets that they would normally be restricted from accessing based on their low-privilege security clearance.\nThe vulnerability does not necessitate elevated administrative rights, but it does require an active session within the application. The scope of the injection is restricted by the database permissions associated with the application service account, though this typically provides sufficient access to extract substantial volumes of proprietary business information.\nThe failure to sanitize input at the entry point of the module allows for the bypass of standard application-level authorization checks, as the query execution occurs directly at the database layer where the context of the user's origin may be insufficient to enforce business-level data masking."
}