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PeopleSoft eProcurement CVE-2026-91476

| EUVDEUVD-2026-106721 MEDIUM
2026-10-20 secalert_us@oracle.com GHSA-5vr8-2vw7-2243
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
    Reach PeopleSoft eProcurement HTTP endpoint
  2. Exploit
    Send crafted unauthenticated request
  3. Impact
    Read subset of protected FIN data

Vulnerability Assessment

Exploitation Conditions

Requires a network-reachable PeopleSoft Enterprise FIN Common Objects Brazil 9.1 deployment exposing the eProcurement component over HTTP; per CVSS PR:N/UI:N no authentication or user interaction is needed and default configurations are reachable. The primary LIMITING factors are product-specific: this is the Brazilian financials localization module, so only PeopleSoft Financials installations that have deployed the Brazil Common Objects on version 9.1 are affected, and impact is confined to read-only disclosure of a subset of data (no write/modify or availability effect). Exposure is further limited where eProcurement is not internet-facing or sits behind access controls.

Impact

This is a moderate-severity information-disclosure flaw (CVSS 3.1 base 5.3) rather than a top-priority emergency. The vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N confirms a low-complexity, remote, unauthenticated attack over HTTP, which raises the practical ease of exploitation, but the impact is capped at low confidentiality only (C:L) with no integrity or availability impact, and Oracle explicitly scopes the result to 'unauthorized read access to a subset' of data. No EPSS score, SSVC decision, KEV listing, or POC indicator was supplied in the input, so exploitation probability and automatability cannot be quantified - these key signals are MISSING. There is a notable tension in the metadata: the input carries an 'Authentication Bypass' tag, yet Oracle describes the issue strictly as unauthorized read access and the CVSS reflects only a confidentiality leak, so the tag appears to overstate the vulnerability class - treat the flaw as an information-disclosure/unauthorized-read issue, not a full auth bypass, and verify against Oracle's CPU October 2026 advisory. Overall this is a 'patch in normal cycle' item: easily exploitable and unauthenticated, but low single-impact and tied to a narrow Brazil-localization module, so it is not a high-real-risk crisis absent evidence of active exploitation.

Exploit ScenarioDerived

A remote, unauthenticated attacker sends crafted HTTP requests to an internet- or network-reachable PeopleSoft eProcurement endpoint running the FIN Common Objects Brazil 9.1 module and retrieves a subset of otherwise-protected PeopleSoft data without logging in. The low attack complexity (AC:L) and lack of required privileges or user interaction mean the request can be issued directly against a default-reachable HTTP service. No public exploit was identified in the provided data, so exploitation would currently require independent research or reverse-engineering of the October 2026 CPU fix.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 20, 2026

Unauthenticated HTTP access to the eProcurement component in PeopleSoft Enterprise FIN Common Objects Brazil 9.1 can disclose a subset of accessible data, with no integrity or availability impact. The issue is remotely exploitable with low complexity and no user interaction (CVSS 3.1 base 5.3), and exposure is limited to deployments of the Brazilian financials localization module that expose eProcurement over the network. No public exploit code or confirmed active exploitation was identified at time of analysis.

RemediationAI

Apply the Oracle Critical Patch Update for October 2026 referenced at https://www.oracle.com/security-alerts/cpuoct2026.html; an exact patched build number was not provided in the available data, so confirm the fixed PeopleSoft Financials/Common Objects Brazil release with Oracle support before upgrading. Until patching is complete, reduce exposure by restricting network access to the eProcurement component through a VPN, allowlist, or authenticated reverse proxy, accepting that this may disrupt legitimate external supplier workflows. Disable or block unnecessary internet-facing HTTP access to the affected PeopleSoft endpoints and monitor web logs for anomalous read patterns; these controls lower, but do not eliminate, the disclosure risk. Verify that all Brazil Common Objects 9.1 deployments are included in patch testing and rollback planning.

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 an Oracle PeopleSoft Financials localization module for Brazilian financial requirements, and the affected eProcurement component is reachable over HTTP. The CVSS vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N describes a network-reachable, unauthenticated, no-interaction path that yields only limited confidentiality impact, with no modification or denial-of-service effect. No CWE mapping or CPE data was supplied, so the precise root-cause class cannot be confirmed from the available data; Oracle's Critical Patch Update advisory is the authoritative technical reference. EUVD-2026-106721 lists only version 9.1 as affected.

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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
vuln.today AI 5.3 MEDIUM

Oracle describes low-complexity unauthenticated HTTP access (AV:N/AC:L/PR:N/UI:N) yielding read-only disclosure of a data subset, so C:L with I:N/A:N and unchanged scope.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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
Low
Integrity
None
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 unauthenticated attacker with network access via HTTP to compromise PeopleSoft Enterprise FIN Common Objects Brazil. Successful attacks of this vulnerability can result in unauthorized read access to a subset of PeopleSoft Enterprise FIN Common Objects Brazil 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
0.3%
Top 77% exploitable
Prevalence
Low
Brazil-specific PeopleSoft financials localization module, narrow deployment footprint
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 0.3%
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
Yes
Human Impact· derived
Medium

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

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

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