CVE-2026-62487: Oracle Contracts Integration CSRF Vulnerability

CVE-2026-62487 Overview

CVE-2026-62487 is a Cross-Site Request Forgery [CWE-352] vulnerability in the Oracle Contracts Integration product of Oracle E-Business Suite, specifically the Internal Operations component. Supported versions 12.2.3 through 12.2.15 are affected. An unauthenticated attacker with network access via HTTP can exploit the flaw, provided a legitimate user is tricked into interacting with attacker-controlled content. The vulnerability crosses a security scope boundary, meaning successful exploitation can impact resources beyond the vulnerable component. Successful attacks grant unauthorized update, insert, or delete access to some Contracts Integration data, plus unauthorized read access to a subset of that data.

Critical Impact
A scope-changing CSRF flaw enabling unauthorized modification and limited disclosure of Oracle Contracts Integration data through victim-initiated HTTP requests.

Affected Products

Oracle E-Business Suite - Oracle Contracts Integration version 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 version 12.2.15

Discovery Timeline

2026-07-21 - CVE-2026-62487 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-62487

Vulnerability Analysis

The issue is a Cross-Site Request Forgery weakness [CWE-352] in the Internal Operations component of Oracle Contracts Integration. The application accepts state-changing HTTP requests without verifying that the request originated from an intentional user action within a trusted context. An attacker crafts a malicious page or link that, when loaded by an authenticated Oracle E-Business Suite user, triggers requests carrying the victim's session credentials.

Because the vulnerability causes a scope change, exploitation reaches beyond the immediate component and can affect additional Oracle E-Business Suite products sharing the trust boundary. The confidentiality and integrity impacts are partial, with no direct effect on availability. Attack complexity is low and no privileges are required from the attacker, but user interaction from a victim is necessary.

Root Cause

The root cause is the absence or inadequate validation of anti-CSRF tokens on state-changing HTTP endpoints within Oracle Contracts Integration. The Internal Operations component processes requests based on ambient session authentication cookies without confirming request origin through synchronizer tokens, custom headers, or SameSite cookie protections.

Attack Vector

Exploitation begins with an attacker hosting malicious HTML or JavaScript on an external site or delivering it through phishing. When an authenticated Oracle E-Business Suite user visits the crafted content, their browser issues background HTTP requests to the target Contracts Integration endpoints. The requests carry valid session cookies, and the server processes them as legitimate user actions. Data insertion, modification, deletion, and limited disclosure can result, with impact extending to additional Oracle products due to the scope change.

No verified public exploit code is available for this vulnerability. See the Oracle Security Alert - July 2026 for authoritative technical guidance.

Detection Methods for CVE-2026-62487

Indicators of Compromise

Unexpected create, update, or delete operations in Oracle Contracts Integration audit logs performed by users during time windows correlating with external web browsing activity.
HTTP requests to Contracts Integration endpoints with Referer or Origin headers pointing to untrusted external domains.
Sudden data changes in Contracts Integration records without corresponding user-initiated workflow entries in application session logs.

Detection Strategies

Correlate web proxy logs with Oracle E-Business Suite application logs to identify state-changing requests preceded by navigation to unknown external URLs.
Alert on Oracle E-Business Suite HTTP POST, PUT, or DELETE requests missing expected anti-CSRF token parameters or arriving with cross-origin Referer values.
Monitor for anomalous patterns of rapid data modifications tied to a single authenticated session originating from browser contexts rather than trusted internal tooling.

Monitoring Recommendations

Enable and centralize Oracle E-Business Suite audit trail logging for the Contracts Integration and Internal Operations components.
Forward web application firewall and reverse proxy logs to a SIEM for correlation with authentication events and data modification events.
Track user behavior baselines for administrative and contracts staff to surface deviations that suggest browser-driven forgery.

How to Mitigate CVE-2026-62487

Immediate Actions Required

Apply the Oracle Critical Patch Update from July 2026 to all Oracle E-Business Suite 12.2.3 through 12.2.15 installations running Oracle Contracts Integration.
Notify Oracle E-Business Suite users to avoid browsing external websites in the same browser session used for E-Business Suite access until patching completes.
Review Oracle Contracts Integration audit logs for unauthorized data changes since the vulnerability's disclosure window.

Patch Information

Oracle addressed CVE-2026-62487 in the July 2026 Critical Patch Update. Administrators should consult the Oracle Security Alert - July 2026 for the applicable patch identifiers and installation prerequisites for their Oracle E-Business Suite release.

Workarounds

Enforce strict SameSite=Strict or SameSite=Lax attributes on Oracle E-Business Suite session cookies where supported by the deployment configuration.
Deploy a web application firewall rule that rejects state-changing requests to Contracts Integration endpoints when the Origin or Referer header does not match the trusted E-Business Suite hostnames.
Segment administrative browser sessions from general-purpose web browsing by using dedicated browser profiles or workstations for Oracle E-Business Suite access.

bash

# Example WAF rule (ModSecurity) enforcing Origin/Referer for state-changing requests
SecRule REQUEST_METHOD "@rx ^(POST|PUT|DELETE)$" \
  "id:1062487,\
   phase:1,\
   chain,\
   deny,\
   status:403,\
   msg:'CVE-2026-62487 CSRF protection - untrusted Origin/Referer'"
  SecRule REQUEST_URI "@beginsWith /OA_HTML/" \
    "chain"
    SecRule &REQUEST_HEADERS:Origin "@eq 0" \
      "chain"
      SecRule REQUEST_HEADERS:Referer "!@beginsWith https://ebs.internal.example.com/" "t:none"