CVE-2026-46894 Overview
CVE-2026-46894 affects the Oracle iSupplier Portal component of Oracle E-Business Suite, specifically the Home Page module. Supported versions 12.2.3 through 12.2.15 are affected. The vulnerability allows a low-privileged attacker with network access over HTTPS to compromise the iSupplier Portal. Successful exploitation requires user interaction from a victim other than the attacker, consistent with [CWE-352] Cross-Site Request Forgery (CSRF). The flaw can lead to a complete takeover of the iSupplier Portal, with impact to confidentiality, integrity, and availability.
Critical Impact
A successful CSRF attack can result in full takeover of the Oracle iSupplier Portal instance, exposing supplier data and disrupting procurement workflows.
Affected Products
- Oracle iSupplier Portal 12.2.3 through 12.2.15
- Oracle E-Business Suite (iSupplier Portal component)
- Oracle iSupplier Portal Home Page module
Discovery Timeline
- 2026-06-17 - CVE-2026-46894 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-2026-46894
Vulnerability Analysis
The vulnerability is categorized as [CWE-352] Cross-Site Request Forgery in the Home Page component of Oracle iSupplier Portal. An authenticated low-privilege attacker can craft a malicious request that, when triggered by an authenticated victim, executes privileged actions in the victim's session. The CVSS vector indicates a network-exploitable issue with low attack complexity that requires user interaction, with high impact across confidentiality, integrity, and availability. Because the scope remains unchanged, the impact is bounded to the iSupplier Portal application, but full takeover of the portal is achievable. The EPSS probability is currently low, reflecting limited public exploitation activity at this time.
Root Cause
The root cause is the absence or insufficient enforcement of anti-CSRF protections on state-changing requests served by the iSupplier Portal Home Page. The application accepts authenticated requests without validating that they originated from a legitimate, intended user action. This allows an attacker to forge requests that the browser submits with the victim's valid session cookies.
Attack Vector
The attack vector is network-based over HTTPS. An attacker with low privileges authors a malicious page or link that triggers a forged request to the iSupplier Portal. When an authenticated user with a valid session visits the attacker-controlled content, the browser submits the request and the server processes it under the victim's identity. The result is unauthorized actions that culminate in takeover of the iSupplier Portal session and associated data. Full technical details are restricted; refer to the Oracle Security Alert for vendor guidance.
Detection Methods for CVE-2026-46894
Indicators of Compromise
- Unexpected state-changing POST or GET requests to iSupplier Portal Home Page endpoints lacking a valid Referer or Origin header matching the application's domain.
- Account modifications, supplier record changes, or document submissions originating from sessions with anomalous referer chains.
- Multiple identical requests from different user sessions within short time windows, indicating possible mass CSRF triggering.
Detection Strategies
- Inspect web server and application logs for requests to iSupplier Portal URLs missing CSRF token parameters or carrying mismatched referer headers.
- Correlate session activity with browser navigation logs to identify cross-origin triggers to sensitive endpoints.
- Deploy WAF signatures that flag requests to Oracle E-Business Suite endpoints lacking expected anti-CSRF tokens.
Monitoring Recommendations
- Enable verbose access logging on the Oracle HTTP Server fronting E-Business Suite and forward logs to a centralized analytics platform.
- Alert on any administrative or supplier-data changes performed outside business hours or from unusual geolocations.
- Monitor authentication and privilege change events in the iSupplier Portal for anomalous patterns following user web browsing activity.
How to Mitigate CVE-2026-46894
Immediate Actions Required
- Apply the patches released in the Oracle Critical Patch Update of June 2026 to all affected Oracle E-Business Suite 12.2.3 through 12.2.15 environments.
- Restrict network exposure of the iSupplier Portal to required supplier networks and trusted partners where feasible.
- Educate users with iSupplier Portal access to avoid clicking untrusted links while authenticated to Oracle E-Business Suite.
Patch Information
Oracle has released fixes as part of the June 2026 Critical Patch Update. Administrators must consult the Oracle Security Alert for patch identifiers and application instructions specific to each supported version in the 12.2.3 to 12.2.15 range.
Workarounds
- Enforce strict SameSite=Strict or SameSite=Lax cookie attributes on session cookies issued by the iSupplier Portal where supported.
- Deploy a Web Application Firewall rule that blocks requests to iSupplier Portal endpoints lacking a valid same-origin Referer or Origin header.
- Require re-authentication or step-up authentication for sensitive supplier actions until patches are applied.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
