CVE-2026-91344 in Outside In Technology
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Clean Content SDK). The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Outside In Technology. 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 • 10/21/2026
The vulnerability identified in Oracle Outside In Technology, specifically within the Clean Content SDK component of version 8.5.8, represents a critical availability risk for organizations relying on this middleware product. This flaw is classified under CWE-400, which denotes uncontrolled resource consumption, and aligns with MITRE ATT&CK technique T1499, Endpoint Denial of Service. The core technical issue stems from improper handling of specific input data within the HTTP processing pipeline of the Clean Content SDK. When an attacker sends a specially crafted request over the network via HTTP, the application fails to properly validate or bound the resources required for processing that content. This lack of rigorous resource management leads directly to excessive memory allocation or infinite loops during parsing operations, causing the service to become unresponsive or crash entirely.
The operational impact of this vulnerability is severe due to its high exploitability and low barrier to entry. The CVSS 3.1 base score of 7.5 reflects a significant threat level primarily driven by availability impacts rather than confidentiality or integrity breaches. Because the attack vector requires no authentication, any external actor with network access can trigger the denial-of-service condition without needing valid credentials. This makes it particularly dangerous in public-facing environments where web servers utilizing Oracle Fusion Middleware are exposed to the internet. A successful exploitation results in a complete service outage, effectively halting business operations that depend on content processing capabilities provided by this technology stack. The repeatable nature of the crash means an attacker can sustainably disrupt services through persistent probing or automated attack scripts.
Mitigation strategies must focus on immediate patching and network-level controls to reduce exposure until updates are applied. Oracle has released patches for version 8.5.8 that address these resource management flaws within the Clean Content SDK. Organizations should prioritize applying this update as soon as possible in their maintenance windows. In addition to patching, implementing strict input validation at the perimeter is essential. Web Application Firewalls can be configured to detect and block anomalous HTTP requests that exhibit patterns consistent with buffer overflow or resource exhaustion attacks targeting Outside In Technology. Furthermore, restricting network access to only trusted IP ranges for administrative interfaces and internal services used by this middleware reduces the attack surface available to unauthenticated attackers. Regular vulnerability scanning should also include specific checks for Oracle Fusion Middleware components to ensure timely detection of similar flaws in future releases.