CVE-2026-46957 Overview
CVE-2026-46957 is a high-severity access control weakness ([CWE-284]) affecting the Internal Operations component of the Oracle iSupplier Portal, part of Oracle E-Business Suite. Affected versions span 12.2.3 through 12.2.15. A low-privileged attacker with network access over HTTP can exploit the flaw to compromise the iSupplier Portal. Oracle rates the issue as difficult to exploit, but successful attacks lead to full takeover of the portal, impacting confidentiality, integrity, and availability.
Critical Impact
Successful exploitation results in takeover of the Oracle iSupplier Portal, exposing supplier data, business processes, and integration points to a low-privileged remote attacker.
Affected Products
- Oracle iSupplier Portal 12.2.3 through 12.2.15
- Oracle E-Business Suite deployments exposing the iSupplier Portal Internal Operations component
- Internet-facing supplier collaboration environments built on Oracle E-Business Suite
Discovery Timeline
- 2026-06-17 - CVE-2026-46957 published to NVD
- 2026-06-18 - Last updated in NVD database
- Vendor advisory published in the Oracle Critical Patch Update – June 2026
Technical Details for CVE-2026-46957
Vulnerability Analysis
The vulnerability resides in the Internal Operations component of the Oracle iSupplier Portal. Oracle classifies the weakness under improper access control ([CWE-284]). An authenticated user with only low privileges can issue crafted HTTP requests that bypass intended authorization boundaries inside the portal.
Oracle's advisory notes that exploitation is difficult, reflecting conditions outside the attacker's direct control. When those conditions are met, the attacker gains full control of the iSupplier Portal, including the ability to read, modify, and disrupt supplier data and workflows. The Exploit Prediction Scoring System assigns the issue an EPSS probability of 0.301%.
Root Cause
The root cause is improper enforcement of access controls within the Internal Operations module. Authorization checks do not adequately constrain which actions a low-privileged session can invoke. As a result, requests that should be restricted to privileged operators are accepted from any authenticated supplier-tier account. Oracle has not published technical specifics beyond the advisory in the June 2026 Critical Patch Update.
Attack Vector
The attack is remote and conducted over HTTP. The attacker must hold valid low-privileged credentials to the iSupplier Portal, such as a supplier or limited internal account. From an authenticated session, the attacker submits crafted requests to Internal Operations endpoints. No user interaction is required, and the scope remains unchanged. Successful exploitation yields high impact to confidentiality, integrity, and availability of the portal.
No public proof-of-concept code or in-the-wild exploitation has been reported. The CVE is not listed on the CISA Known Exploited Vulnerabilities catalog.
Detection Methods for CVE-2026-46957
Indicators of Compromise
- Unexpected HTTP requests from low-privileged supplier accounts targeting Internal Operations URLs on the iSupplier Portal.
- New or modified privileged records, workflow approvals, or supplier bank account changes that do not align with normal operator activity.
- Authentication sessions originating from atypical geographies or IP ranges immediately followed by sensitive operations.
Detection Strategies
- Enable and review Oracle E-Business Suite audit trails on the iSupplier Portal, focusing on Internal Operations actions performed by non-administrative roles.
- Compare web access logs against the role of the authenticated session, flagging access to endpoints not expected for supplier-tier users.
- Correlate web application firewall logs with EBS application logs to surface authorization bypass patterns.
Monitoring Recommendations
- Stream Oracle EBS application and middle-tier logs into a centralized SIEM or data lake for correlation across HTTP, database, and identity sources.
- Build alerts on privilege-sensitive actions in iSupplier Portal initiated by accounts that lack a corresponding administrative role assignment.
- Track failed and successful authentication anomalies against iSupplier Portal accounts, especially long-dormant supplier users.
How to Mitigate CVE-2026-46957
Immediate Actions Required
- Apply the fixes contained in the Oracle Critical Patch Update – June 2026 to all Oracle E-Business Suite instances running iSupplier Portal versions 12.2.3 through 12.2.15.
- Inventory all internet-exposed iSupplier Portal deployments and prioritize patching of externally reachable systems.
- Review and disable inactive or unnecessary supplier accounts to reduce the pool of credentials an attacker could leverage.
Patch Information
Oracle addresses CVE-2026-46957 in the June 2026 Critical Patch Update. Customers should follow the patch matrix in the Oracle Security Alert to identify the specific patch IDs applicable to their Oracle E-Business Suite 12.2.x deployment. Apply prerequisite technology stack updates as documented by Oracle before installing the security fixes.
Workarounds
- Restrict network access to the iSupplier Portal through a reverse proxy or web application firewall, limiting reachability to required supplier IP ranges where feasible.
- Enforce multi-factor authentication and aggressive session timeouts on all iSupplier Portal user accounts to reduce the value of compromised credentials.
- Audit role and responsibility assignments in Oracle E-Business Suite, removing excess privileges from supplier-facing accounts pending patch deployment.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
