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Oracle REST Data Services EUVDEUVD-2026-33052

| CVE-2026-46830 MEDIUM
Information Exposure (CWE-200)
2026-05-28 oracle GHSA-4c89-qj95-32wv
5.3
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
    Identify ORDS Mongoapi HTTPS endpoint
  2. Exploit
    Send unauthenticated HTTPS request
  3. Execution
    Bypass authentication enforcement
  4. Impact
    Read accessible data subset

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK

2 techniques across 2 tactics: Collection, Discovery

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

Exploitation Conditions

The ORDS Mongoapi component must be enabled and the ORDS instance must be reachable over HTTPS from the attacker's network position. The CVSS vector PR:N/AC:L/UI:N confirms no authentication, no special configuration complexity, and no user interaction are required. Exploitation is limited to deployments running ORDS versions 24.2.0 through 26.1.0 with the Mongoapi component active - organizations that have never configured or enabled Mongoapi are not exposed. Impact is bounded to reading a subset of data accessible via Mongoapi; no write, delete, or service disruption capability is indicated by the CVSS (I:N/A:N), which limits blast radius compared to higher-severity Oracle CPU findings.

Impact

The CVSS 3.1 base score of 5.3 (Medium) with vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N presents a clear and consistent picture: network-reachable, no authentication required, trivially exploitable, but impact is limited strictly to partial confidentiality loss with no integrity or availability consequences. The 'Easily exploitable' language in the Oracle advisory reinforces the low-complexity rating. No EPSS score is available in the provided data, so automated exploitation probability cannot be quantified. The absence of KEV listing and no identified POC suggests opportunistic mass exploitation has not occurred as of the advisory date, though the zero-authentication, network-accessible nature means exploitation requires minimal sophistication. The practical risk is elevated for organizations that expose ORDS externally or to untrusted networks, particularly where the Mongoapi component is in active use and data sensitivity is high. The scope is limited (S:U), meaning a successful attacker cannot leverage this to pivot beyond the ORDS service boundary.

Exploit ScenarioDerived

An unauthenticated attacker with HTTPS network access to an exposed ORDS instance sends crafted requests to the Mongoapi endpoint, exploiting the authentication bypass to enumerate and read data accessible through that interface without presenting any credentials. Because attack complexity is low and no user interaction is required, this scenario is feasible with minimal tooling - a simple HTTP client or MongoDB-compatible driver pointed at the vulnerable endpoint suffices. No public proof-of-concept code has been identified at time of analysis, but the simplicity of the vector means independent rediscovery is plausible.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – May 28, 2026

Unauthorized read access in Oracle REST Data Services (ORDS) versions 24.2.0 through 26.1.0 is achievable by unauthenticated remote attackers via the Mongoapi component over HTTPS. The vulnerability is tagged as an Authentication Bypass, indicating the Mongoapi endpoint fails to enforce access controls, exposing a subset of data accessible through that interface. No public exploit code and no CISA KEV listing exist at time of analysis, but the CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms low-complexity, zero-authentication exploitation is feasible at scale.

RemediationAI

Apply the patches distributed as part of Oracle's Critical Patch Update for May 2026, available at https://www.oracle.com/security-alerts/cspumay2026.html. The advisory does not specify an exact fixed version number in the data available for this analysis - the precise target upgrade version must be confirmed from the Oracle advisory or Oracle Support directly. As an immediate compensating control, organizations should restrict network access to the ORDS Mongoapi endpoint using firewall rules or network segmentation to limit exposure to trusted clients only, noting this does not remediate the authentication bypass but reduces the attack surface. If the Mongoapi component is not operationally required, disabling it entirely removes the attack surface with no functional impact to standard ORDS REST API usage. Organizations should also audit ORDS access logs for anomalous unauthenticated HTTPS requests to Mongoapi paths as a detection measure.

Affected VersionsENISA

Oracle REST Data Services 24.2.0 ≤26.1.0

Affected Packages

euvd oracle_rest_data_services 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 REST Data Services (ORDS) is Oracle's middleware layer that exposes Oracle Database content via RESTful APIs. The affected component, Mongoapi, provides a MongoDB-compatible API interface on top of Oracle Database, allowing clients that speak the MongoDB wire protocol or REST conventions to interact with Oracle data. The CPE string cpe:2.3:a:oracle_corporation:oracle_rest_data_services:*:*:*:*:*:*:*:* confirms Oracle Corporation as the vendor and ORDS as the product. The CWE is not formally assigned in available data, but the 'Authentication Bypass' tag strongly suggests the Mongoapi endpoint lacks proper authentication enforcement - meaning requests that should require credentials are processed without validating identity. The attack surface is the HTTPS-accessible Mongoapi endpoint, making any internet- or network-exposed ORDS deployment within the affected version range potentially vulnerable.

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Severity by source

Vendor (oracle) PRIMARY 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from Vendor (oracle) · only source for this CVE.

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in Oracle REST Data Services (component: Mongoapi). Supported versions that are affected are 24.2.0-26.1.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle REST Data Services. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle REST Data Services accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Threat Intelligence Overview

EPSS Score
0.0%
Top 92% exploitable
Data Quality
6 sources
Confidence: High

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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
None
System Exposure· derived
Open
Automatable
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

26
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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