CVE-2026-62489: Oracle Contracts Integration Auth Bypass

CVE-2026-62489 Overview

CVE-2026-62489 is an access control vulnerability [CWE-284] in the Oracle Contracts Integration product of Oracle E-Business Suite, specifically in the Internal Operations component. The flaw affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access over HTTP can exploit the issue, though successful exploitation requires overcoming high attack complexity. When exploited, the vulnerability enables unauthorized update, insert, or delete operations against a subset of Oracle Contracts Integration data, as well as unauthorized read access to a limited data subset. Oracle addressed the issue in the July 2026 Critical Patch Update.

Critical Impact
Authenticated attackers can perform unauthorized modification and limited disclosure of Oracle Contracts Integration data over the network, undermining integrity and confidentiality of contract records.

Affected Products

Oracle E-Business Suite — Oracle Contracts Integration 12.2.3 through 12.2.15
Internal Operations component of Oracle Contracts Integration
Deployments exposing E-Business Suite HTTP endpoints to authenticated users

Discovery Timeline

2026-07-21 - CVE-2026-62489 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-62489

Vulnerability Analysis

The vulnerability resides in the Internal Operations component of Oracle Contracts Integration within Oracle E-Business Suite. The weakness is classified as [CWE-284] Improper Access Control. An attacker holding low-privileged credentials on the E-Business Suite instance can reach the affected functionality over HTTP and perform actions beyond the boundaries of their assigned role.

Successful exploitation yields two outcomes. First, the attacker can insert, update, or delete a subset of Contracts Integration data. Second, the attacker gains read access to a limited subset of the same data. Availability is not affected. The confidentiality and integrity impacts are limited in scope rather than system-wide.

Exploitation requires meeting specific preconditions, reflected in the high attack complexity rating. The attacker must already be authenticated to the application, which restricts opportunistic exploitation but does not prevent abuse by malicious insiders or attackers who have obtained employee credentials through phishing or credential stuffing.

Root Cause

The root cause is improper enforcement of access control checks in the Internal Operations component. Authorization logic does not correctly restrict data modification and read operations to the users who should be permitted to perform them. Oracle has not published implementation-level detail beyond the July 2026 Critical Patch Update advisory.

Attack Vector

The attack vector is network based over HTTP. An authenticated user sends crafted requests to the vulnerable Contracts Integration endpoints. No user interaction is required, and the scope remains unchanged. Because the flaw requires valid credentials and non-trivial conditions to exploit, mass exploitation is unlikely, but targeted abuse by low-privileged accounts is realistic.

No public proof-of-concept code or exploit is available at this time. Refer to the Oracle Security Alert July 2026 for the vendor-authoritative description.

Detection Methods for CVE-2026-62489

Indicators of Compromise

Unexpected INSERT, UPDATE, or DELETE activity on Oracle Contracts Integration tables originating from low-privileged user accounts.
HTTP requests to Internal Operations endpoints from user sessions that do not normally interact with Contracts Integration.
Audit records showing data reads or writes outside a user's assigned business scope.

Detection Strategies

Enable and review Oracle E-Business Suite Sign-On Audit and Application Object Library audit trails for Contracts Integration objects.
Correlate application-tier HTTP logs with database session activity to identify authorization anomalies.
Baseline normal user access patterns against Contracts Integration Internal Operations and alert on deviations.

Monitoring Recommendations

Forward E-Business Suite application, middle-tier, and database audit logs to a centralized SIEM for retention and correlation.
Monitor for privilege changes and new responsibility assignments that grant access to Contracts Integration.
Track failed and successful authentication events against the E-Business Suite login servlet to detect credential abuse.

How to Mitigate CVE-2026-62489

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update to all Oracle E-Business Suite environments running Contracts Integration versions 12.2.3 through 12.2.15.
Inventory all E-Business Suite instances and confirm patch level after deployment using Oracle's AD_PATCH views.
Rotate credentials for low-privileged accounts that may have interacted with Contracts Integration Internal Operations before patching.

Patch Information

Oracle released a fix as part of the July 2026 Critical Patch Update. Administrators should review the Oracle Security Alert July 2026 for patch identifiers, prerequisites, and deployment guidance specific to their E-Business Suite version. Apply the patch in a non-production environment first and validate application functionality before promoting to production.

Workarounds

Restrict network access to E-Business Suite HTTP endpoints so that only trusted internal networks can reach Contracts Integration.
Review and tighten responsibility and role assignments to remove Contracts Integration access from users who do not require it.
Enable Oracle Database and application audit policies on Contracts Integration schemas until the patch is deployed.

bash

# Example: verify applied Oracle E-Business Suite patch level
sqlplus apps/<password> <<EOF
SELECT bug_number, creation_date
  FROM ad_bugs
 WHERE bug_number = '<CPU_JUL2026_BUG_ID>';
EOF