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Oracle Outside In EUVDEUVD-2026-106596

| CVE-2026-91342 HIGH
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-xxg3-589c-2m83
8.2
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Craft malicious document for Outside In SDK
  2. Delivery
    Deliver file via HTTP to target app
  3. Exploit
    Victim processes/opens the file
  4. Execution
    Trigger parsing flaw in Clean Content SDK
  5. Persist
    Cross scope boundary into host product
  6. Impact
    Modify critical data and read subset

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires the targeted application to process an attacker-supplied document through the Oracle Outside In Clean Content SDK (version 8.5.8), and requires human interaction from a person other than the attacker (UI:R) - typically a victim opening, uploading, or triggering conversion/filtering of the malicious file. No authentication is required (PR:N) and the attack reaches the component over the network via HTTP (AV:N). The key limiting factors are: (1) the mandatory victim interaction, which prevents unattended mass exploitation, and (2) the dependency on a host product actually embedding and invoking the Clean Content SDK on untrusted input - environments that do not expose Outside In to attacker-controlled documents are not exposed. Real-world impact is amplified by the scope change, meaning a successful parse can affect products beyond Outside In itself.

Impact

This is a credible mid-to-high priority issue, but not a drop-everything emergency on current signals. The CVSS 3.1 score of 8.2 is elevated primarily because of the scope change (S:C) combined with high integrity impact (I:H), reflecting that a flaw in the Outside In document-parsing SDK can propagate damage to the host products that embed it. The vector is favorable to an attacker in terms of reachability (AV:N, AC:L, PR:N) but is materially gated by UI:R - successful exploitation requires a victim to process attacker-supplied content, which rules out fully automated, wormable mass exploitation. No EPSS score, no CISA KEV listing, and no public POC are present in the provided data, so there is no evidence of active or imminent widespread exploitation; this currently reads as a high-CVSS issue whose real-world urgency depends on patch cadence rather than live attacks. One conflict to flag explicitly: the input Tag 'Authentication Bypass' is inconsistent with the description and CVSS (which describe a content-parsing flaw requiring user interaction, with no authentication component and C:L/I:H impact) - the tag appears mislabeled and should not drive prioritization. Note also that the Oracle CPU reference describes this as unauthorized create/delete/modify to critical data (I:H) plus read access to a subset (C:L), with no availability impact (A:N).

Exploit ScenarioDerived

An attacker crafts a malicious document (e.g., a specially formed file in one of the formats handled by the Outside In Clean Content SDK) and delivers it to a victim through an application that embeds Outside In for document conversion, filtering, or content inspection. When a user or downstream service processes the file, the parsing flaw is triggered over the network-facing workflow (HTTP), allowing unauthorized modification of critical data and read of a subset of data, with impact crossing into additional products due to the scope change. No public exploit code is identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 20, 2026

Oracle Outside In Technology 8.5.8, specifically the Outside In Clean Content SDK, can be compromised by a crafted document delivered over HTTP, enabling an unauthenticated remote attacker to create, delete, or modify critical data and read a limited subset of accessible data when a victim opens, uploads, or triggers conversion of the malicious file. The scope-change rating means exploitation can affect host applications and other products that embed the SDK, not just Outside In itself, although mandatory user interaction prevents unattended mass exploitation. No public exploit code or CISA KEV entry was identified at time of analysis, so this is a credible mid-to-high priority issue rather than an emergency.

RemediationAI

Oracle's October 2026 Critical Patch Update advisory (https://www.oracle.com/security-alerts/cpuoct2026.html) is the remediation reference; apply the fixed Outside In Technology build listed there for version 8.5.8, and verify the fixed build against the advisory before deployment because no exact patched version number was supplied in the available data. Until patching is complete, reduce exposure by preventing the Clean Content SDK from processing untrusted or unsolicited documents - for example, disable automatic content extraction or conversion for external uploads, route document parsing through a sandboxed, least-privilege service, and restrict network access to the component that invokes the SDK. These controls trade some document-processing functionality and convenience for reduced attack surface, and they do not eliminate the need for the vendor fix.

Affected VersionsENISA

Oracle Outside In Technology 8.5.8

Affected Packages

euvd oracle_outside_in_technology no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The Outside In Clean Content SDK is a document-filtering and content-extraction library within Oracle Fusion Middleware that host applications use to parse, convert, and sanitize files such as office documents and archives. The provided CVSS vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N) describes a network-reachable, low-complexity attack that needs no credentials but depends on a non-attacker user interacting with a malicious document; the scope change (S:C) indicates that a successful parse can cross the SDK's security boundary and affect the embedding application or downstream products. CWE classification was not supplied, so the precise root-cause class (for example, memory corruption, parser logic error, or unsafe content handling) cannot be confirmed from the available data. The 'Authentication Bypass' tag is noted, but the assessed vector already treats the attacker as unauthenticated (PR:N), so the tag does not alter the privilege assessment; no public exploit code was identified.

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Severity by source

Vendor (oracle) PRIMARY 8.2 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N
vuln.today AI 8.2 HIGH

Network-reachable via HTTP with low complexity and no auth, but requires a victim to process a crafted file (UI:R); scope change and high integrity impact dominate, with no availability loss.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
High
Availability
None

DescriptionCVE.org

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 require human interaction from a person other than the attacker and while the vulnerability is in Oracle Outside In Technology, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Outside In Technology accessible data as well as unauthorized read access to a subset of Oracle Outside In Technology accessible data. CVSS 3.1 Base Score 8.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N).

Executive ViewAI

Why It Matters

Oracle Outside In Technology 8.5.8 Clean Content SDK, a document conversion component embedded in numerous host applications, carries a high-severity flaw that can let a crafted document undermine data integrity and expose a limited set of accessible information when a victim interacts with the file. Because the scope-change rating extends risk to host applications and other products that embed the SDK, leadership should view this as a cross-application data integrity exposure rather than an isolated component defect, especially since no vendor-released patch is identified at time of analysis and containment depends on interim controls. No public exploit identified at time of analysis, but the embedded footprint and lack of patch make coordinated mitigation a priority.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis; interim mitigations include disabling the Outside In Clean Content SDK where not required, restricting HTTP document upload and conversion to trusted sources, sandboxing or segmenting conversion services, enforcing least privilege on data stores, blocking risky file types, validating documents before conversion, and monitoring for anomalous document processing.

Threat Intelligence Overview

EPSS Score
0.3%
Top 81% exploitable
Prevalence
Medium
embedded document-parsing SDK bundled into various enterprise products, not ubiquitous
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

41
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +41
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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