CVE-2026-83186

Received Received - Intake

Unauthorized Data Modification in Oracle E-Business Suite Calendar

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: Oracle

Description

Vulnerability in the Oracle Common Applications Calendar product of Oracle E-Business Suite (component: Applications Calendar). 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 creation, deletion or modification access to critical data or all 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 7.1 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-15

Last Modified

2026-09-15

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83186

EUVD

EUVD-2026-79538

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	common_applications_calendar	From 12.2.3 (inc) to 12.2.15 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Common Applications Calendar within Oracle E-Business Suite. It affects versions 12.2.3 to 12.2.15. A low-privileged attacker with network access via HTTP can exploit it to compromise the system. Successful exploitation may allow unauthorized creation, deletion, or modification of critical data, as well as unauthorized partial denial of service.

Detection Guidance

Detection of this vulnerability requires checking for Oracle Common Applications Calendar versions 12.2.3 to 12.2.15. Review Oracle E-Business Suite logs for unusual HTTP access patterns or modifications to calendar data. No specific commands are provided in the context.

Impact Analysis

If you use Oracle Common Applications Calendar versions 12.2.3 to 12.2.15, an attacker could gain unauthorized access to modify or delete your data, or disrupt service. This could lead to data loss, corruption, or unavailability of critical calendar functions.

Compliance Impact

This vulnerability could impact compliance with GDPR and HIPAA by allowing unauthorized modification or deletion of sensitive data, leading to violations of integrity and availability requirements. Organizations may face penalties or legal consequences if such breaches occur.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update (CPU) for Oracle E-Business Suite to address the vulnerability in the Oracle Common Applications Calendar component.

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