Oracle Outside In Technology: Unauthenticated network access via HTTP (CVE-2026-87394)
Summary
Oracle Outside In Technology 8.5.8, a document extraction, conversion and viewing library used in Oracle Fusion Middleware, is affected. A remote, unauthenticated attacker with HTTP network access can compromise the product, which may lead to unauthorized access to critical data and a partial denial of service. Exploitation is rated easy and needs no user interaction, but the CVSS base score is 8.2 and no public proof of concept or KEV listing was found at the time of writing.
Affected
- Oracle Outside In Technology 8.5.8 (component: Outside In Core)
- Other releases: Unknown.
Fixed in
Unknown. Check the Oracle Critical Patch Update October 2026 advisory for the fixed release.
Workaround
Unknown. No vendor workaround was found. Reduce exposure by restricting network access to affected services and limiting who can submit files to them.
Exploitation
- CVSS 3.1: 8.2 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L)
- CISA SSVC: exploitation none, automatable yes, technical impact partial
- Not listed in CISA KEV.
- EPSS 0.00425 (low, aggregator snapshot).
- Public proof of concept: none found; this does not exclude that one exists.
Our recommendation
- Check whether any software in your environment embeds Outside In 8.5.8, especially upload, preview, conversion or indexing features.
- Ask software vendors for patch status and apply the Oracle fix as soon as it is available, prioritising internet-facing systems.
- Until patched, restrict network access and who can submit files to affected services.
- Monitor KEV listing and public exploit availability.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Critical Patch Update October 2026 www.oracle.com
- CVE record summary (OpenCVE) app.opencve.io
- CVE summary and CVSS (Strix) www.strix.ai
- Scores, EPSS and reporter (Vulners) vulners.com
- Product overview (Oracle) docs.oracle.com
- Product datasheet (Oracle) www.oracle.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 15:27.
Original description (NVD)
Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Core). 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 access to critical data or complete access to all Oracle Outside In Technology accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Outside In Technology. CVSS 3.1 Base Score 8.2 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L).
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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