Oracle Outside In Technology: Improper access control via HTTP
Summary
Oracle Outside In Technology 8.5.8 (Clean Content SDK component) contains an access control flaw (CWE-284). An attacker with a low-privileged account and network access via HTTP can compromise the product, with high impact on confidentiality, integrity and availability (CVSS 3.1 base score 8.8). No user interaction is required, but the attacker needs a valid low-privileged account.
Affected
- Oracle Outside In Technology 8.5.8 (Clean Content SDK component)
Fixed in
- Unknown. No fixed version or patch ID is named in the sources reviewed. Check Oracle's October 2026 Critical Patch Update advisory for the patch for CVE-2026-91340.
Workaround
- None provided in the CVE record.
- Practical mitigation until patched: restrict network access to HTTP endpoints that expose the Clean Content SDK to internal, trusted callers only.
Exploitation
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- Not listed in the CISA KEV catalogue.
- EPSS below 1% (very low).
- No public proof of concept found in a brief search; this is unconfirmed.
Our recommendation
- Open Oracle's October 2026 CPU advisory and record the patch ID and revision for 8.5.8.
- Identify all systems running Outside In 8.5.8, including copies embedded in third-party applications; ask application vendors whether they bundle it.
- Confirm whether any HTTP endpoint exposes the Clean Content SDK, and restrict it to internal networks until patched.
- Apply the patch within your standard timeline for high-severity Oracle vulnerabilities.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Security Alerts: October 2026 CPU www.oracle.com
- OpenCVE: CVE-2026-91340 app.opencve.io
- Vulners: CVE-2026-91340 vulners.com
- Strix: CVE-2026-91340 www.strix.ai
- Waratek: Oracle October 2026 Critical Patch Update waratek.com
- Breach Signal: Oracle October 2026 Critical Patch Update breach-signal.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 31 Oct 2026, 11:28.
Original description (NVD)
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 low privileged attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in takeover of Oracle Outside In Technology. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
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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