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PeopleSoft Enterprise CC CVE-2026-91331

| EUVDEUVD-2026-106585 LOW
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-v9w7-rjxp-qh6p
3.8
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
    Authenticate with high-privileged PeopleSoft account
  2. Exploit
    Send crafted HTTP request to Common Application Objects
  3. Execution
    Perform unauthorized read/insert/update/delete
  4. Impact
    Limited data confidentiality and integrity impact

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 already hold a high-privileged (administrative-level) account on the target PeopleSoft Enterprise CC Common Application Objects 9.2 instance and network access to it over HTTP; no user interaction is needed (UI:N) and attack complexity is low (AC:L). The dominant limiting factor is PR:H - without pre-existing privileged credentials the vulnerability cannot be triggered - which confines realistic risk to malicious or compromised privileged insiders rather than unauthenticated remote attackers. Only version 9.2 is reported affected, and impact is bounded to a subset of accessible data (C:L/I:L, no availability impact).

Impact

This is a low-priority vulnerability by every available signal. The CVSS 3.1 base score is 3.8 (Low) with vector AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N: although the attack vector is network-based over HTTP with low complexity and no user interaction, exploitation requires PR:H - an attacker who already holds high (administrative) privileges on the PeopleSoft instance. Impact is limited to partial confidentiality and integrity (C:L/I:L) with no availability impact, meaning an attacker gains unauthorized read of a subset of data and unauthorized insert/update/delete of some data, but no full compromise or scope change (S:U). No EPSS score was supplied, the CVE is not listed in CISA KEV, and no public exploit code was identified, so there is no public exploit identified at time of analysis. The practical ceiling on risk is the PR:H requirement: a high-privileged user abusing their access yields modest additional impact, which is why the vendor rated it Low. Note a conflicting signal in the input metadata: the 'Authentication Bypass' tag contradicts the CVSS vector, which explicitly requires high privileges (PR:H) rather than bypassing authentication - treat that tag as unreliable and verify against Oracle's advisory.

Exploit ScenarioDerived

An attacker who has already obtained a high-privileged PeopleSoft account sends crafted HTTP requests to the Common Application Objects component to read a subset of accessible data and to insert, update, or delete some records beyond their intended authorization. No public exploit code is known, and the scenario is effectively a privileged-insider or post-compromise abuse rather than a remote break-in, given the PR:H requirement and the low (C:L/I:L) impact.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

PeopleSoft Enterprise CC Common Application Objects 9.2 exposes low-complexity HTTP functionality that lets an attacker who already holds a high-privileged account read and modify a limited subset of application data. Oracle's October 2026 CPU rates this CVSS 3.1 3.8 (AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N); no public exploit identified at time of analysis and no CISA KEV confirmation. Realistic exposure is therefore malicious or compromised privileged insiders rather than unauthenticated remote attackers.

RemediationAI

Apply Oracle's October 2026 Critical Patch Update for PeopleSoft Enterprise CC Common Application Objects 9.2 using the vendor advisory at https://www.oracle.com/security-alerts/cpuoct2026.html; the supplied data does not provide an exact PeopleSoft patch or tax-update identifier, so confirm the applicable patch in the CPU before deployment. Until patched, restrict HTTP access to the PeopleSoft web tier to trusted networks or reverse-proxy allowlists (side effect: reduces legitimate remote access), review and remove unnecessary high-privileged PeopleSoft accounts and roles (side effect: may disrupt administrative workflows), enforce MFA and session controls at the perimeter for privileged users (side effect: added login friction), and monitor or alert on privileged read and data-change activity in Common Application Objects (side effect: requires logging and tuning). Because PR:H is the dominant prerequisite, credential compromise and insider misuse are the key scenarios to control.

Affected VersionsENISA

PeopleSoft Enterprise CC Common Application Objects 9.2

Affected Packages

euvd peoplesoft_enterprise_cc_common_application_objects 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 is Oracle's ERP and HCM application suite; Common Application Objects is a shared component layer in the PeopleSoft 9.2 stack exposed through the web/HTTP tier. The issue is an access-control weakness in that component: an attacker with high privileges can use network access over HTTP with low attack complexity and no user interaction to obtain limited read access and limited insert/update/delete capability against a subset of application data. CWE is not supplied; the CVSS vector (PR:H, C:L/I:L, A:N) and the absence of scope change indicate a bounded confidentiality and integrity impact rather than full system compromise. Only PeopleSoft Enterprise CC Common Application Objects 9.2 is listed by Oracle and ENISA EUVD; no CPE identifiers were provided.

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Severity by source

Vendor (oracle) PRIMARY 3.8 LOW
AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
vuln.today AI 3.8 LOW

Network HTTP vector with low complexity and no interaction, but description and vendor vector require high privileges (PR:H); impact is partial confidentiality and integrity only, with no availability effect.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the PeopleSoft Enterprise CC Common Application Objects product of Oracle PeopleSoft (component: Common Application Objects). The supported version that is affected is 9.2. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise PeopleSoft Enterprise CC Common Application Objects. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of PeopleSoft Enterprise CC Common Application Objects accessible data as well as unauthorized read access to a subset of PeopleSoft Enterprise CC Common Application Objects accessible data. CVSS 3.1 Base Score 3.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N).

Threat Intelligence Overview

EPSS Score
0.3%
Top 84% exploitable
Prevalence
Medium
Major Oracle ERP/HR suite, common in large enterprises and universities, not ubiquitous
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 LOW
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
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
Defer
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Low

Priority Score

19
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +19
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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