CVE-2026-62486: Oracle Contracts Auth Bypass Vulnerability

CVE-2026-62486 Overview

CVE-2026-62486 affects the Oracle Contracts Integration product within Oracle E-Business Suite, specifically the Internal Operations component. Supported versions 12.2.3 through 12.2.15 are affected. The flaw allows an unauthenticated attacker with network access via HTTP to compromise Oracle Contracts Integration. Exploitation requires user interaction from a person other than the attacker and is considered difficult to execute. Successful attacks can result in unauthorized update, insert, or delete access to a subset of data, read access to a subset of data, and a partial denial of service condition. The weakness is classified as [CWE-284] Improper Access Control.

Critical Impact
Successful exploitation yields limited unauthorized read, write, and availability impact on Oracle Contracts Integration data, contingent on user interaction.

Affected Products

Oracle E-Business Suite - Oracle Contracts Integration 12.2.3
Oracle E-Business Suite - Oracle Contracts Integration versions 12.2.4 through 12.2.14
Oracle E-Business Suite - Oracle Contracts Integration 12.2.15

Discovery Timeline

2026-07-21 - CVE CVE-2026-62486 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-62486

Vulnerability Analysis

The vulnerability resides in the Internal Operations component of Oracle Contracts Integration, a module of Oracle E-Business Suite. An unauthenticated remote attacker can interact with the affected HTTP interface without valid credentials. The exploitation path requires a legitimate user, separate from the attacker, to perform an action that triggers the malicious flow. Once triggered, the attacker gains limited ability to read, modify, or delete a subset of application data. Attackers can also induce a partial denial of service against the Contracts Integration service. The high attack complexity indicates that specific preconditions or timing must be satisfied for the exploit to succeed.

Root Cause

The underlying weakness is Improper Access Control [CWE-284]. The Internal Operations component does not adequately enforce authorization boundaries on requests received via HTTP. Oracle has not published root-cause specifics beyond the Critical Patch Update advisory. See the Oracle Security Alert July 2026 for vendor guidance.

Attack Vector

The attack vector is Network over HTTP. The attacker sends crafted requests to the exposed Oracle Contracts Integration endpoint. A legitimate user must interact with attacker-influenced content, such as following a link or performing an in-application action, to complete the exploit chain. This pattern is consistent with reflected or interaction-triggered access control abuse in web-facing enterprise resource planning stacks. No verified proof-of-concept code is publicly available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2026-62486

Indicators of Compromise

Unexpected HTTP requests to Oracle Contracts Integration Internal Operations endpoints originating from untrusted networks or external referrers.
Application audit log entries showing unauthorized create, update, or delete operations on Contracts Integration records without a corresponding authenticated workflow.
Repeated malformed or anomalous HTTP requests correlated with user sessions engaging Contracts Integration URLs.

Detection Strategies

Monitor Oracle E-Business Suite FND audit tables and web tier access logs for access to Contracts Integration Internal Operations URIs from unauthenticated sessions.
Correlate user-agent, referer, and session identifiers to identify requests that require user interaction from external contexts.
Baseline normal transaction volume for Contracts Integration and alert on deviations indicating partial denial of service.

Monitoring Recommendations

Forward Oracle E-Business Suite application, database audit, and Apache/OHS access logs to a centralized SIEM for correlation.
Enable Oracle FND signon and page access auditing on the Contracts Integration responsibility.
Track HTTP 4xx and 5xx spikes on Contracts Integration endpoints as an early availability indicator.

How to Mitigate CVE-2026-62486

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update for Oracle E-Business Suite versions 12.2.3 through 12.2.15 without delay.
Restrict network access to Oracle E-Business Suite Contracts Integration endpoints to trusted internal networks and authenticated VPN users.
Review Contracts Integration audit logs for the past 90 days to identify anomalous read, write, or delete activity.

Patch Information

Oracle addressed CVE-2026-62486 in the July 2026 Critical Patch Update. Administrators should download and apply the applicable patch for Oracle E-Business Suite 12.2.3 through 12.2.15 as documented in the Oracle Security Alert July 2026.

Workarounds

Place Oracle E-Business Suite web tiers behind a web application firewall with rules to block unauthenticated requests to Contracts Integration Internal Operations paths.
Disable or restrict the Contracts Integration responsibility for users who do not require it until patching is complete.
Educate end users on the risk of clicking untrusted links that reference internal E-Business Suite URLs, since exploitation requires user interaction.

bash

# Configuration example: restrict access at the reverse proxy layer
# Apache HTTP Server / Oracle HTTP Server example
<Location /OA_HTML/OA.jsp>
    Require ip 10.0.0.0/8
    Require ip 192.168.0.0/16
</Location>