CVE-2026-70927 in Workflow
Summary
by MITRE • 08/19/2026
Vulnerability in the Oracle Workflow product of Oracle E-Business Suite (component: Workflow Notification Mailer). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Workflow. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Workflow. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
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Analysis
by VulDB Data Team • 08/19/2026
The identified vulnerability resides within the Workflow Notification Mailer component of Oracle E-Business Suite, specifically affecting versions ranging from 12.2.3 through 12.2.15. This critical infrastructure element is responsible for managing and dispatching workflow notifications to end-users via email systems. The flaw represents a significant security weakness that undermines the reliability and availability of enterprise resource planning operations dependent on Oracle E-Business Suite. Because the Workflow Notification Mailer handles high-volume transactional communications, any disruption to its functionality can have cascading effects across business processes that rely on timely notification delivery for approvals, alerts, and status updates.
The technical nature of this vulnerability allows an unauthenticated attacker with network access via HTTP to exploit the flaw remotely without requiring prior authentication or user interaction. This characteristic classifies the issue as a remote code execution vector leading specifically to denial of service conditions rather than data compromise. The absence of required credentials means that any entity capable of reaching the affected server over the network, including those on untrusted networks if proper segmentation is not in place, can attempt exploitation. The attack surface is broadened by the use of HTTP, which may indicate a lack of encryption or improper configuration where sensitive workflow management interfaces are exposed to standard web traffic without adequate protective controls such as Web Application Firewalls or strict access control lists.
Successful exploitation results in unauthorized ability to cause a hang or frequently repeatable crash of the Oracle Workflow service, constituting a complete denial of service condition. This impact directly affects the availability pillar of the CIA triad, which is reflected in the high severity rating assigned by Common Vulnerability Scoring System version 3.1. The base score of 7.5 indicates that while confidentiality and integrity remain unaffected due to the nature of the crash rather than data exfiltration or modification, the operational impact on business continuity is severe. Organizations relying on continuous workflow processing for critical operations will experience significant downtime when this vulnerability is triggered repeatedly by an attacker seeking to disrupt service availability.
From a classification perspective, this vulnerability aligns with CWE-400, which describes uncontrolled resource consumption leading to denial of service conditions. The mechanism likely involves the application failing to properly handle specific malformed or excessively large HTTP requests sent to the notification mailer interface, causing memory exhaustion, thread blocking, or process termination. In terms of offensive security frameworks, this behavior corresponds to ATT&CK technique T1499, Endpoint Denial of Service, where an adversary uses methods such as flooding or resource exhaustion to degrade system performance and availability. The vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H confirms that the attack is network-based, requires low complexity, needs no privileges or user interaction, does not affect other systems (scope unchanged), but causes high impact on availability.
Mitigation strategies must focus on immediate patching and temporary access restrictions until updates are applied. Oracle has likely released patches for this vulnerability in subsequent security advisories targeting the 12.2.x branch of E-Business Suite. Administrators should prioritize applying these critical updates to all affected instances within their environment. In addition to patching, network-level controls should be implemented to restrict access to the Workflow Notification Mailer endpoints. This includes configuring firewalls or reverse proxies to allow HTTP traffic only from trusted application servers and internal subnets, thereby preventing unauthenticated external actors from reaching the vulnerable component. Enforcing HTTPS instead of plain HTTP can also help in conjunction with other security layers, although it does not directly fix the underlying logic flaw causing the crash.
Long-term resilience requires a comprehensive review of how workflow components are exposed to network traffic and ensuring that all third-party integrations adhere to strict authentication protocols where applicable. Regular vulnerability scanning should be conducted to detect similar misconfigurations or unpatched services across the enterprise estate. Monitoring tools should also be tuned to alert on unusual spikes in HTTP requests directed at the notification mailer endpoints, which could indicate an ongoing denial of service attempt. By combining timely patching with robust network segmentation and continuous monitoring, organizations can effectively neutralize this threat vector and maintain the availability of their critical workflow operations.