CVE-2026-61294 in Common Applications Calendar
Summary
by MITRE • 07/22/2026
Vulnerability in the Oracle Common Applications Calendar product of Oracle E-Business Suite (component: Calendar Synchronizations). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Common Applications Calendar. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Common Applications Calendar accessible data as well as unauthorized read access to a subset of Oracle Common Applications Calendar accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Common Applications Calendar. CVSS 3.1 Base Score 6.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability resides within Oracle E-Business Suite's Common Applications Calendar component, specifically in the Calendar Synchronizations functionality that enables integration with external calendar systems. The affected versions span from 12.2.3 through 12.2.15, representing a significant release range that indicates this flaw has persisted across multiple maintenance cycles. The vulnerability classification as easily exploitable suggests that attackers require minimal prerequisites to execute successful attacks, making it particularly concerning for organizations running these legacy systems.
The technical nature of this weakness involves insufficient authorization controls within the calendar synchronization mechanisms, allowing authenticated users with network access via HTTP to perform unauthorized operations against the calendar application. This represents a classic privilege escalation vulnerability where low-privileged attackers can leverage their network connectivity to manipulate calendar data through the synchronization interfaces. The vulnerability's CVSS score of 6.3 reflects moderate severity but significant impact across confidentiality, integrity, and availability dimensions, indicating that successful exploitation could compromise multiple critical system aspects simultaneously.
The operational impact of this vulnerability extends beyond simple data manipulation to include partial denial of service conditions that can disrupt calendar functionality for legitimate users. Attackers can potentially delete or modify calendar entries, insert malicious data, and gain read access to sensitive calendar information that may contain personal or business-critical scheduling data. This type of vulnerability aligns with CWE-285 (Improper Authorization) and maps to ATT&CK technique T1078 (Valid Accounts) and T1499 (Network Denial of Service) within the enterprise attack framework, demonstrating how this weakness can be leveraged for both data compromise and service disruption.
Organizations should prioritize immediate patching of affected systems, as this vulnerability represents a persistent threat that could allow attackers to gain unauthorized access to calendar data containing sensitive scheduling information. The low privilege requirement and network-based exploitation vector make this particularly dangerous in environments where multiple users have legitimate access to the E-Business Suite through HTTP connections. Additional mitigations should include implementing network segmentation to restrict access to calendar synchronization endpoints, monitoring for unusual calendar data modifications, and conducting thorough access reviews to ensure that only authorized personnel maintain calendar synchronization privileges.