CVE-2026-61294: Oracle E-Business Suite Auth Bypass Flaw

CVE-2026-61294 Overview

CVE-2026-61294 is a SQL injection vulnerability [CWE-89] in the Oracle Common Applications Calendar product of Oracle E-Business Suite. The flaw resides in the Calendar Synchronizations component and affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access via HTTP can exploit the vulnerability to compromise the application. Successful exploitation allows unauthorized create, update, or delete access to a subset of data, unauthorized read access to a subset of data, and a partial denial of service condition. Oracle disclosed the issue in its July 2026 Critical Patch Update advisory.

Critical Impact
Authenticated attackers can inject SQL through the Calendar Synchronizations component to modify records, read sensitive calendar data, and cause partial denial of service in Oracle E-Business Suite.

Affected Products

Oracle E-Business Suite — Common Applications Calendar version 12.2.3
Oracle E-Business Suite — Common Applications Calendar versions 12.2.4 through 12.2.14
Oracle E-Business Suite — Common Applications Calendar version 12.2.15

Discovery Timeline

2026-07-21 - CVE-2026-61294 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-61294

Vulnerability Analysis

The vulnerability is a SQL injection weakness [CWE-89] in the Calendar Synchronizations component of Oracle Common Applications Calendar. The component accepts attacker-controllable input over HTTP and incorporates that input into database queries without adequate sanitization or parameterization. An authenticated attacker with low privileges can craft requests that alter the intended SQL statement and reach the underlying database context used by the calendar synchronization workflow.

Because the affected code path processes data belonging to the calendar synchronization feature, the impact is bounded to a subset of application data rather than the full E-Business Suite datastore. Attackers can nonetheless perform unauthorized reads, writes, and deletions within that scope, and can disrupt calendar service availability. The vulnerability is scored with impacts across confidentiality, integrity, and availability, all rated low, with the scope unchanged.

Root Cause

The root cause is improper neutralization of special elements used in an SQL command. User-supplied parameters submitted to the Calendar Synchronizations endpoint are concatenated into a query rather than bound as parameters, allowing SQL syntax injected by the attacker to be interpreted by the database engine.

Attack Vector

Exploitation requires network access over HTTP and valid low-privileged application credentials. No user interaction is required. The attacker sends a crafted HTTP request to the Calendar Synchronizations component with malicious SQL fragments embedded in a vulnerable parameter. The database processes the manipulated statement and returns data, modifies rows, or fails in a way that causes partial denial of service. See the Oracle Security Alert July 2026 for the vendor description.

Detection Methods for CVE-2026-61294

Indicators of Compromise

HTTP requests to Oracle Common Applications Calendar synchronization endpoints containing SQL metacharacters such as ', --, /*, UNION, or ; within parameter values.
Database audit records showing unexpected SELECT, INSERT, UPDATE, or DELETE statements originating from the calendar application user against tables outside normal synchronization workflow.
Application errors or ORA-series database exceptions logged by Oracle E-Business Suite during calendar operations.

Detection Strategies

Enable Oracle Database fine-grained auditing on tables accessed by the Calendar Synchronizations module and alert on anomalous DML from the EBS application account.
Deploy a web application firewall in front of Oracle E-Business Suite with signatures for SQL injection patterns targeting calendar endpoints.
Correlate authenticated EBS session activity with database query patterns to identify low-privileged users issuing statements outside expected query templates.

Monitoring Recommendations

Forward EBS application logs, Oracle HTTP Server access logs, and database audit logs to a centralized analytics platform and retain them for post-incident review.
Alert on spikes in HTTP 500 responses or database exceptions originating from Calendar Synchronizations URIs, which may indicate injection probing.
Monitor privileged account creation, role grants, and data exports following any suspicious calendar traffic to catch post-exploitation activity.

How to Mitigate CVE-2026-61294

Immediate Actions Required

Apply the Oracle July 2026 Critical Patch Update fix for Oracle Common Applications Calendar on all Oracle E-Business Suite 12.2.3–12.2.15 deployments.
Inventory all internet-exposed and internal EBS instances and prioritize patching those reachable by low-privileged or partner accounts.
Rotate credentials for EBS application users that may have been used to test or exploit the flaw and review database audit trails for anomalous activity.

Patch Information

Oracle addressed CVE-2026-61294 in the July 2026 Critical Patch Update. Administrators should download and apply the applicable EBS patches referenced in the Oracle Security Alert July 2026. Follow Oracle's documented procedure for staging patches in a test environment before promoting to production.

Workarounds

Restrict network access to the Oracle E-Business Suite HTTP tier so that only authenticated internal users can reach Calendar Synchronizations endpoints.
Deploy WAF rules that block SQL injection payloads on request parameters submitted to the calendar module until patching is complete.
Review and reduce role assignments so that fewer accounts possess the low privileges required to reach the affected component.

bash

# Example WAF rule (ModSecurity) blocking common SQLi patterns on the calendar path
SecRule REQUEST_URI "@contains /OA_HTML/" \
  "chain,phase:2,deny,status:403,id:1026612940,\
   msg:'Possible SQLi against Oracle EBS Calendar (CVE-2026-61294)'"
  SecRule ARGS "@rx (?i)(union(\s|/\*.*\*/)+select|('|%27)\s*(or|and)\s+\d+=\d+|;--|/\*!)" \
    "t:none,t:urlDecodeUni"