CVE-2026-61048: Oracle Inventory Optimization DoS Flaw

CVE-2026-61048 Overview

CVE-2026-61048 is a partial denial of service vulnerability in the User Interface component of Oracle Inventory Optimization, part of Oracle E-Business Suite. The flaw affects Oracle E-Business Suite versions 12.2.3 through 12.2.15. An authenticated attacker with low privileges can exploit the vulnerability over HTTP to disrupt availability of the Inventory Optimization module. The vulnerability is difficult to exploit and does not affect confidentiality or integrity. Oracle disclosed the issue in the July 2026 Critical Patch Update.

Critical Impact
Successful exploitation causes a partial denial of service against Oracle Inventory Optimization, degrading availability of supply chain planning functions for authenticated E-Business Suite users.

Affected Products

Oracle E-Business Suite - Oracle Inventory Optimization version 12.2.3
Oracle E-Business Suite - Oracle Inventory Optimization versions 12.2.4 through 12.2.14
Oracle E-Business Suite - Oracle Inventory Optimization version 12.2.15

Discovery Timeline

2026-07-21 - CVE CVE-2026-61048 published to NVD
2026-07-21 - Last updated in NVD database
July 2026 - Oracle addresses the issue in the Oracle Critical Patch Update Advisory - July 2026

Technical Details for CVE-2026-61048

Vulnerability Analysis

The vulnerability resides in the User Interface component of Oracle Inventory Optimization within Oracle E-Business Suite. An attacker with a low-privileged authenticated session can send crafted HTTP requests that cause a partial denial of service in the affected module. The attack scope is unchanged, meaning impact is confined to the vulnerable component rather than spreading across the E-Business Suite deployment. Confidentiality and integrity remain intact, and only availability is affected. Oracle rates the exploitation complexity as high, which indicates that non-trivial conditions must be met for a successful attack. Oracle has not published detailed technical internals for the flaw.

Root Cause

Oracle's advisory does not disclose the specific defect. The vendor identifies the affected component as the User Interface layer of Oracle Inventory Optimization. The behavior aligns with resource exhaustion or improper input handling that degrades module availability. Public CWE mapping is not provided in the NVD entry.

Attack Vector

The attacker requires network reachability to the Oracle E-Business Suite HTTP endpoint and valid low-privilege credentials. No user interaction is needed. The attacker submits crafted requests to the Inventory Optimization user interface to trigger the denial of service condition. Because exploitation is rated difficult, reliable weaponization would likely require specific runtime state or repeated request sequences.

No public proof-of-concept or exploit code is available for CVE-2026-61048. Refer to the Oracle Security Alert July 2026 for vendor-supplied technical details.

Detection Methods for CVE-2026-61048

Indicators of Compromise

Repeated HTTP requests from a single authenticated E-Business Suite session targeting Inventory Optimization URLs
Unexpected error responses or worker thread stalls in Oracle HTTP Server logs tied to Inventory Optimization pages
Sudden drop in responsiveness or timeouts reported by users of the Inventory Optimization module

Detection Strategies

Baseline normal HTTP request volume to Inventory Optimization endpoints and alert on sustained deviations from low-privilege accounts
Correlate Oracle E-Business Suite application logs with Oracle HTTP Server access logs to identify request patterns preceding availability degradation
Monitor authentication events for low-privilege accounts issuing unusual request bursts against /OA_HTML/ paths associated with Inventory Optimization

Monitoring Recommendations

Enable verbose logging on the Oracle E-Business Suite middle tier for the Inventory Optimization module during the patch validation window
Forward web tier and application logs to a centralized analytics platform for behavioral analysis
Track availability metrics for the Inventory Optimization service and alert on error-rate spikes

How to Mitigate CVE-2026-61048

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update to all Oracle E-Business Suite deployments running versions 12.2.3 through 12.2.15
Inventory all E-Business Suite instances and confirm which have the Inventory Optimization module enabled
Restrict network exposure of the E-Business Suite web tier to trusted internal networks or authenticated VPN users
Review and tighten role assignments so that only required users hold responsibilities granting access to Inventory Optimization

Patch Information

Oracle addressed CVE-2026-61048 in the July 2026 Critical Patch Update. Administrators should download and apply the relevant patches through My Oracle Support as documented in the Oracle Security Alert July 2026. Verify patch application against Oracle E-Business Suite versions 12.2.3 through 12.2.15.

Workarounds

Temporarily disable the Inventory Optimization responsibility for users who do not require it until the patch is deployed
Place a web application firewall in front of the E-Business Suite web tier to rate-limit and inspect requests to Inventory Optimization URLs
Enforce session and request rate limits at the Oracle HTTP Server layer to reduce the impact of resource-abuse patterns