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Oracle Outside In Technology EUVDEUVD-2026-106598

| CVE-2026-91344 HIGH
Uncontrolled Resource Consumption (CWE-400)
2026-10-20 secalert_us@oracle.com GHSA-rw37-j3c2-f9rr
7.5
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
    Reach document-processing endpoint over HTTP
  2. Exploit
    Submit crafted malformed document
  3. Execution
    Trigger parser hang or crash in Clean Content SDK
  4. Impact
    Cause complete denial of service

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource consumption limits
MITRE ATT&CK

1 technique across 1 tactic: Impact

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

Exploitation Conditions

Exploitation requires that a malformed document be delivered to and parsed by Oracle Outside In Clean Content SDK version 8.5.8 within the host application - the vulnerability lives in the file-parsing path, so a deployment that accepts and converts/indexes untrusted documents is the concrete prerequisite. Per CVSS PR:N and UI:N no authentication or user interaction is needed once a crafted file reaches the parser, and AC:L indicates no special timing or configuration is required. The practical limiting factor is exposure: the SDK is a library, so an attacker must be able to get an attacker-controlled file into the parsing pipeline (e.g. an internet-facing upload/conversion service); installations that do not parse untrusted input are not meaningfully reachable. Impact is limited to denial of service (A:H only; C:N/I:N) - no data disclosure or code execution.

Impact

The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, base 7.5) describes an unauthenticated, network-reachable, low-complexity attack with no user interaction, but the impact is confined to availability only - a hang or repeatable crash (complete DoS) with no confidentiality or integrity loss. No EPSS score, CISA KEV listing, POC reference, or SSVC decision data was provided in the input, so there is no exploitation-probability or active-exploitation signal to corroborate or contradict the CVSS reading. The 'network via HTTP' framing from Oracle should be treated with caution: Outside In Technology is a file-parsing SDK, so real-world exploitation almost always depends on the embedding application feeding attacker-supplied documents to the parser - the network vector reflects that document-ingestion path rather than a directly listening service, so actual reachability varies by how the host product exposes parsing. This is a genuine availability concern for exposed document-processing services but is a lower operational priority than a comparable RCE: worst case is denial of service, not compromise. Verify with the Oracle October 2026 CPU whether the affected component is exposed in your deployment before prioritizing.

Exploit ScenarioDerived

An attacker submits a specially crafted document to an application that embeds Oracle Outside In Clean Content SDK 8.5.8 (for example a server-side content-conversion, indexing, or DLP pipeline). When the SDK parses the malformed file, it hangs or crashes, taking down the document-processing service. No public exploit code was identified at time of analysis, and the low attack complexity with no authentication means exploitation is straightforward once a malicious file can reach the parser.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 20, 2026

A denial-of-service flaw in Oracle Outside In Clean Content SDK 8.5.8 (part of Oracle Fusion Middleware) lets remote attackers crash or hang the parsing engine by submitting a malformed document. Per the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, A:H), no authentication or user interaction is required once a crafted file reaches the parser, but the real gate is deployment exposure: the SDK is a library, so only services that ingest and convert untrusted documents are meaningfully reachable. Impact is availability-only - complete denial of service with no confidentiality or integrity loss; no public exploit code or confirmed active exploitation was identified at time of analysis.

RemediationAI

Apply the fix from Oracle's October 2026 Critical Patch Update advisory (https://www.oracle.com/security-alerts/cpuoct2026.html), which covers Outside In Technology 8.5.8 - because the SDK is embedded in third-party products, confirm with each application vendor that their bundle has been refreshed to the CPU level, as patching the standalone SDK alone does not update downstream consumers. Patch status per the available data is vendor advisory only; no independent patch version string was confirmed in the supplied intelligence. Until updates are deployed, compensating controls: restrict who can submit documents to any upload/conversion/indexing endpoint using the SDK (authentication, allow-listing of accepted file types, size and page-count limits), and front the parsing service with a separate pre-filter or sandbox so a parser hang does not take down the primary application - trade-offs are reduced functionality for legitimate document workflows and added latency. For services that do not require external document ingestion, disable the conversion/parsing feature entirely or isolate those workers so a crash cannot cascade to customer-facing tiers.

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

Oracle Outside In Technology is a set of document-filtering/conversion SDKs used by third-party applications to parse, render, and transform hundreds of file formats; the Clean Content SDK component specifically extracts and sanitizes text from documents for content-security and indexing pipelines. The flaw resides in the file-parsing path of version 8.5.8, so the attack surface is any application that hands attacker-controlled input to the SDK - an internet-facing upload, conversion, indexing, or email-attachment-scanning service being the canonical exposure. No CWE was supplied in the source data, but the availability-only impact (A:H, C:N/I:N) and the CVSS AC:L/PR:N/UI:N profile are consistent with a malformed-input handling weakness that exhausts or corrupts parser state (hang or repeatable crash) rather than memory-corruption enabling code execution. Because the vulnerable code lives in a library rather than a network daemon, exploitability is entirely a function of whether an untrusted file can be delivered into the parsing pipeline; hosts that never parse external documents face no practical risk.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vuln.today AI 7.5 HIGH

Unauthenticated crafted-document parsing over the HTTP ingestion path gives AV:N/AC:L/PR:N/UI:N; impact is a complete crash/hang DoS, so A:H with C:N/I:N.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

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 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).

Executive ViewAI

Why It Matters

A high-severity availability flaw in Oracle Outside In Clean Content SDK 8.5.8, a document-parsing component shipped within Oracle Fusion Middleware, allows an unauthenticated remote party to hang or crash the parsing engine by submitting a malformed file. The exposure is limited to business services that accept and convert documents from untrusted sources - content ingestion pipelines, mail gateways, upload/scanning services, and similar middleware integrations - and no vendor patch or public exploit code was identified at time of analysis. Leadership should care because the only impact is disruption: teams relying on those document-processing workflows could face service outages, but there is no risk of data disclosure or tampering.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: restrict or gate which services accept untrusted documents into the Outside In Clean Content SDK 8.5.8 parser; enforce file-size, page-count, and processing-time limits plus strict timeouts; run parsing in isolated, resource-capped, low-privilege workers with automatic restart; apply rate limiting and input validation or format conversion at the perimeter; quarantine and manually review anomalous submissions; and monitor parser availability and error rates for early detection.

Threat Intelligence Overview

EPSS Score
0.4%
Top 63% exploitable
Prevalence
Medium
file-parsing SDK embedded in various enterprise document-handling products
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 0.4%
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
Yes
Human Impact
Medium

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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