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PeopleSoft FIN Common Objects Brazil CVE-2026-91474

| EUVDEUVD-2026-106719 MEDIUM
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-chx6-8g3g-v6j5
6.1
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
    Gain adjacent-segment network position
  2. Exploit
    Authenticate with existing high-privileged account
  3. Execution
    Send crafted request to eProcurement module
  4. Impact
    Read or modify all accessible financial/procurement data

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 attacker to (1) hold a high-privileged account on the PeopleSoft Enterprise FIN Common Objects Brazil 9.1 deployment (PR:H - not an unauthenticated or bypass scenario), and (2) have access to the physical communication segment attached to the hardware running the module (AV:A - adjacent network, not routable internet access). No user interaction is required (UI:N) and attack complexity is low (AC:L) once those prerequisites are met. The limiting factors are significant: the combined need for pre-existing high privileges and local/adjacent network proximity means only insiders or an attacker who has already established a strong foothold can exploit it, and only the eProcurement component of the Brazil financial localization module is affected.

Impact

This is a moderate-severity (CVSS 6.1) Oracle PeopleSoft flaw whose real-world risk is substantially constrained by its own access requirements. The vector (CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N) requires AV:A (adjacent - the attacker must be on the physical communication segment attached to the host) AND PR:H (an already high-privileged account), which together make opportunistic or remote mass exploitation implausible despite the 'easily exploitable' phrasing in Oracle's description. The high confidentiality and integrity impact (C:H/I:H) is real - full read and modify access to all data the module can reach - but an attacker who already holds high privileges on the system and local network proximity has largely already won, limiting the marginal risk this adds. No EPSS score, CISA KEV listing, or POC was provided in the input, so there is no signal of active or probable exploitation; absence of these is consistent with a vendor-disclosed (Oracle CPU) issue rather than an in-the-wild threat. Note a conflict in the input: the 'Authentication Bypass' tag contradicts the CVSS PR:H requirement - a genuine authentication bypass would be PR:N, so the tag appears mislabeled and should not drive prioritization. Overall this is a high-CVSS-component but low-real-world-urgency issue suitable for routine quarterly patch cycles, not emergency response.

Exploit ScenarioDerived

An attacker who already holds a high-privileged PeopleSoft account and can reach the adjacent network segment of the host running the FIN Common Objects Brazil module (component: eProcurement) sends crafted requests to read or tamper with procurement/financial data. Because impact is C:H/I:H, they can exfiltrate or modify all data accessible to the module. No public exploit identified at time of analysis, and no user interaction is required (UI:N).

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 PeopleSoft Enterprise FIN Common Objects Brazil 9.1, specifically the eProcurement component, exposes critical data to a high-privileged attacker who can reach the server over the adjacent network segment. Successful exploitation lets that attacker create, delete, or modify critical records and read all data the module can access, with high confidentiality and integrity impact and no availability impact. The CVSS 3.1 score of 6.1 reflects severe data impact offset by demanding prerequisites: an existing high-privileged account (PR:H) plus physical or adjacent-network access (AV:A), no user interaction (UI:N), and low attack complexity (AC:L) once those are met. No public exploit code or confirmed active exploitation was identified at time of analysis, so risk is concentrated among insiders and attackers who already hold a strong foothold on the PeopleSoft deployment.

RemediationAI

No standalone vendor patch version is specified in the available data; the fix is delivered through Oracle's Critical Patch Update published at https://www.oracle.com/security-alerts/cpuoct2026.html, so apply the October 2026 CPU (or later) update to PeopleSoft Enterprise FIN Common Objects Brazil 9.1 and confirm the eProcurement component is included in the applied bundle, treating patch availability as 'available per vendor advisory' rather than a named release. Where the CPU cannot be applied immediately, compensating controls that match this vulnerability's actual prerequisites are most effective: restrict who holds high-privileged PeopleSoft accounts in the Brazil FIN module (PR:H is a hard prerequisite, so least-privilege and role review directly removes the attack path, at the cost of reduced administrative convenience), and firewall/segment the PeopleSoft application tier so it cannot be reached from untrusted adjacent segments or shared physical network infrastructure (AV:A is the other prerequisite, and enforcing strict network segmentation and physical port security on that segment closes it, with the trade-off of extra network engineering and possible impact on legitimate integrated eProcurement clients). No public exploit code was identified, so emergency out-of-band action is not indicated, but CPU cadence should be maintained because insiders with existing privileged access remain the realistic threat actor.

Affected VersionsENISA

PeopleSoft Enterprise FIN Common Objects Brazil 9.1

Affected Packages

euvd peoplesoft_enterprise_fin_common_objects_brazil 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

PeopleSoft Enterprise FIN Common Objects Brazil is Oracle's Brazilian financial localisation module for PeopleSoft, and the affected eProcurement component handles requisition, purchase order, and supplier-facing procurement workflows tied into the broader FIN data model. The root cause class was not assigned a CWE by the reporter, but the impact profile (full read plus create/delete/modify over module data, zero availability impact, no user interaction, low complexity) is consistent with an authorisation or access-control weakness in a procurement-facing interface rather than memory corruption. The CVSS vector CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N is important: AV:A means the attacker must sit on the physical communication segment attached to the host running the module, not merely reach it through routed internet traffic, and PR:H means a high-privileged PeopleSoft account must already exist. Scope is unchanged, so the compromise is confined to the PeopleSoft Enterprise FIN Common Objects Brazil deployment itself rather than the underlying PeopleSoft platform or host. CPE data was not supplied; the only confirmed affected configuration per EUVD and Oracle is version 9.1 of the localisation module.

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Severity by source

Vendor (oracle) PRIMARY 6.1 MEDIUM
AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
vuln.today AI 6.1 MEDIUM

Description's 'physical communication segment' maps to AV:A and 'high privileged attacker' to PR:H; full data read/modify gives C:H/I:H with no availability impact (A:N).

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the PeopleSoft Enterprise FIN Common Objects Brazil product of Oracle PeopleSoft (component: eProcurement). The supported version that is affected is 9.1. Easily exploitable vulnerability allows high privileged attacker with access to the physical communication segment attached to the hardware where the PeopleSoft Enterprise FIN Common Objects Brazil executes to compromise PeopleSoft Enterprise FIN Common Objects Brazil. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all PeopleSoft Enterprise FIN Common Objects Brazil accessible data as well as unauthorized access to critical data or complete access to all PeopleSoft Enterprise FIN Common Objects Brazil accessible data. CVSS 3.1 Base Score 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N).

Threat Intelligence Overview

EPSS Score
0.2%
Top 87% exploitable
Prevalence
Medium
Oracle ERP Brazil localization module, limited to Brazil-operating PeopleSoft enterprises
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
Controlled
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +30
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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