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Oracle ORDS EUVDEUVD-2026-105777

| CVE-2026-101361 MEDIUM
2026-10-20 secalert_us@oracle.com GHSA-jr68-ggwf-v678
4.2
CVSS 3.1 · NVD
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Attack ChainAIDerived

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

  1. Access
    Authenticate with low-privilege ORDS account
  2. Exploit
    Send crafted HTTP request to Core
  3. Execution
    Satisfy high-complexity precondition
  4. Impact
    Gain partial read/write to ORDS data

Vulnerability Assessment

Exploitation Conditions

Exploitation requires the attacker to already possess a low-privileged authenticated account on the Oracle REST Data Services instance (PR:L) and network HTTP access to the Core component (AV:N). The vulnerability is explicitly described as 'difficult to exploit' (AC:H), meaning success depends on conditions outside the attacker's sole control - such as winning a race condition or satisfying a specific runtime state - which materially limits reliable exploitation. Affected deployments are limited to ORDS versions 24.2.0 through 26.1.0; no user interaction is required (UI:N). The combination of required authentication plus high complexity is the primary factor constraining real-world risk.

Impact

This is a genuinely low-priority vulnerability despite affecting an Oracle enterprise component. The CVSS 3.1 base score is only 4.2 (Medium), and the vector (AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N) is self-limiting on multiple axes: high attack complexity (AC:H) means the attacker must win a race, defeat a non-trivial precondition, or control factors outside their direct influence, and low-privilege authentication (PR:L) is required, so this is not an unauthenticated attack. Impact is partial - low confidentiality and low integrity, with no availability impact and no scope change. No EPSS score was supplied in the input, there is no CISA KEV listing, and no public proof-of-concept was identified, so all exploitation-likelihood signals are either absent or negative. There is no conflict between signals to flag; rather, every available signal points the same direction (low real-world risk). One data caveat: the input tag 'Authentication Bypass' directly contradicts the CVSS PR:L metric and the description's own 'low privileged attacker' wording - a true authentication bypass would be PR:N, so the tag appears mislabeled and should not drive prioritization. Treat this as a routine patch-in-next-cycle item, not an emergency.

Exploit ScenarioDerived

An attacker who already holds a low-privilege authenticated account on an Oracle REST Data Services instance (versions 24.2.0 through 26.1.0) sends crafted HTTP requests over the network to the Core component, winning the difficult preconditions implied by the high attack complexity. On success they gain unauthorized read access to a subset of ORDS-accessible data and can perform limited unauthorized insert, update, or delete operations. No public exploit code was identified at time of analysis, and the high complexity makes reliable exploitation non-trivial.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Oracle REST Data Services (ORDS) versions 24.2.0 through 26.1.0 contain a difficult-to-exploit flaw in the Core component that allows a low-privileged authenticated attacker with HTTP network access to read a limited subset of ORDS-accessible data and to perform unauthorized inserts, updates, or deletes. Exploitation requires an existing low-privileged account and depends on conditions outside the attacker's sole control, materially limiting real-world risk; the CVSS 3.1 base score is 4.2. No public exploit code or confirmed active exploitation was identified at time of analysis.

RemediationAI

Apply the Oracle Critical Patch Update fix for Oracle REST Data Services per the October 2026 advisory at https://www.oracle.com/security-alerts/cpuoct2026.html; the supplied data does not provide an exact fixed version number, so confirm the applicable ORDS patch level with Oracle rather than assuming one. Until patched, restrict network access to ORDS Core HTTP endpoints to trusted integrations, which may break legitimate REST clients if applied too broadly, and review low-privileged ORDS accounts to remove unnecessary access, recognizing that this can disrupt application workflows relying on those accounts. Monitor ORDS and database logs for anomalous insert, update, or delete activity from low-privileged users, accepting that detection depends on adequate logging and baseline behavior.

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 is Oracle's middleware for exposing Oracle Database resources through RESTful HTTP endpoints, and the affected Core component handles request processing within that service. The CVSS vector AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N describes network reachability over HTTP, high attack complexity, low privileges required, no user interaction, unchanged scope, and low confidentiality and integrity impact with no availability impact. The high complexity reflects exploitation conditions outside the attacker's control, such as a race condition or a specific runtime state, and the PR:L component means the attacker must already hold a low-privileged authenticated account on the ORDS instance. No CWE identifier was supplied, and no CPE strings were provided; the EUVD data lists Oracle REST Data Services 24.2.0 through 26.1.0 as affected.

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Severity by source

NVD PRIMARY 4.2 MEDIUM
AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
vuln.today AI 4.2 MEDIUM

Network HTTP vector (AV:N); 'difficult to exploit' justifies AC:H; a low-privileged account is required so PR:L; partial read and write give C:L/I:L and no availability impact (A:N).

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

Primary rating from NVD.

CVSS VectorNVD

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

DescriptionNVD

Vulnerability in Oracle REST Data Services (component: Core). Supported versions that are affected are 24.2.0-26.1.0. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle REST Data Services. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle REST Data Services accessible data as well as unauthorized read access to a subset of Oracle REST Data Services accessible data. CVSS 3.1 Base Score 4.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N).

Threat Intelligence Overview

EPSS Score
0.2%
Top 91% exploitable
Prevalence
Medium
common Oracle REST layer, deployed where Oracle DB exposes REST APIs
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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
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· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

21
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +21
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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