CVE-2026-87396

Unauthenticated HTTP Access Allows Data Exposure in Oracle Outside In Technology 8.5.8

Published Oct 20, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Description

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 require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Outside In Technology accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N).

Analysis

Technical impact

The vulnerability in Oracle Outside In Technology 8.5.8 permits an unauthenticated attacker with network access via HTTP to compromise the product and gain unauthorized access to critical data. This is an access control flaw (CWE-284). The attack requires the attacker to influence another user to perform an action, indicating that a socially engineered interaction is needed. Successful exploitation results in confidential data exposure, with no impact defined on integrity or availability.

Affected Systems

The affected system is Oracle Outside In Technology (Oracle Fusion Middleware), version 8.5.8, as distributed by Oracle Corporation. No other versions are listed as impacted.

Risk and Exploitability

The CVSS v3.1 base score of 6.5 reflects a moderate severity threat primarily to confidentiality. The EPSS score is < 1%, indicating a low but non‑zero probability of exploitation, and the vulnerability is not listed in the CISA KEV catalog. The likely attack vector is unauthenticated HTTP access, requiring a human interaction from a user other than the attacker to trigger the data exposure.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Oracle Corporation

Oracle Outside In Technology

affected

Version	Status	Constraints
`8.5.8`	affected	—

Configuration 1 [-]

cpe:2.3:a:oracle:outside_in_technology:8.5.8:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Oracle

Outside In Technology

Version	Status	Scheme	Platform
`8.5.8`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Update Oracle Outside In Technology to the latest supported release or apply the vendor’s patch that addresses this issue
Limit HTTP traffic to the Oracle Outside In Technology service to trusted IP ranges or VPNs to reduce exposure to network attackers
Enforce HTTPS and implement web‑application firewall rules that block or mitigate intrusive user‑interaction‑based attacks

Generated by OpenCVE AI on October 28, 2026 at 19:49 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.351% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://www.oracle.com/security-alerts/cpuoct2026.html

History

Oct 28, 2026 8:15 PM Title updated View changes

Type	Values Removed	Values Added
Title		Unauthenticated HTTP Access Allows Data Exposure in Oracle Outside In Technology 8.5.8

Oct 28, 2026 5:30 PM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title	Unauthenticated HTTP Access Allows Unauthorized Data Exposure in Oracle Outside In Technology
Weaknesses	CWE-200

Oct 28, 2026 3:30 PM Weaknesses updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-284
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Oct 21, 2026 8:00 AM Title updated. Weaknesses updated View changes

Type	Values Removed	Values Added
Title		Unauthenticated HTTP Access Allows Unauthorized Data Exposure in Oracle Outside In Technology
Weaknesses		CWE-200

Oct 20, 2026 9:30 PM Description updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		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 require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Outside In Technology accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N).
First Time appeared		Oracle Oracle outside In Technology
CPEs		cpe:2.3:a:oracle:outside_in_technology:8.5.8:::::::*
Vendors & Products		Oracle Oracle outside In Technology
References		https://www.oracle.com/security-alerts/cpuoct2026.html
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}`