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PeopleSoft PeopleTools EUVDEUVD-2026-105823

| CVE-2026-101407 MEDIUM
Uncontrolled Resource Consumption (CWE-400)
2026-10-20 secalert_us@oracle.com GHSA-jvr6-gcgv-6rfr
5.5
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 PeopleTools privileges
  2. Exploit
    Send crafted HTTP request to Change Assistant
  3. Impact
    Exfiltrate critical data and cause partial DoS

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource consumption limits
MITRE ATT&CK

1 technique across 1 tactic: Impact

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 possess high (administrative) privileges within Oracle PeopleSoft Enterprise PeopleTools and network access over HTTP to the Updates Change Assistant component; affected supported versions are 8.61 through 8.63. The dominant limiting factor is PR:H - this is not exploitable by an unauthenticated or low-privileged user, so the realistic attacker set is restricted to privileged insiders or adversaries who have already taken over a privileged account. No user interaction is required (UI:N) and attack complexity is low (AC:L), so once privileged access exists the attack is straightforward.

Impact

This is a moderate-severity issue (CVSS 3.1 base 5.5) whose real-world risk is substantially constrained by its privilege requirement. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L shows network attack vector over HTTP with low complexity and no user interaction, but critically PR:H - the attacker must already hold high (administrative) privileges within PeopleTools. This confines the realistic threat to malicious insiders or adversaries who have already compromised a privileged account, so despite the AV:N 'network' label, the practical barrier to entry is high. No EPSS score, CISA KEV listing, or SSVC decision data was provided in the input, and no public exploit was identified at time of analysis - all signals that argue against imminent mass exploitation. There is no conflict between the CVSS vector and the description: both agree the attacker is 'high privileged' with network/HTTP access. Impact is skewed toward confidentiality (C:H - complete read access to PeopleTools data) with only a partial availability hit (A:L) and no integrity impact (I:N). Net assessment: a genuine but second-tier priority - meaningful for high-value PeopleSoft deployments and insider-threat models, but not a drop-everything network-exploitable flaw, since it cannot be triggered by an unauthenticated remote attacker.

Exploit ScenarioDerived

An attacker who already holds high PeopleTools privileges (a rogue administrator, or an outsider who has compromised a privileged PeopleSoft account) sends a crafted HTTP request to the Updates Change Assistant component. This yields complete read access to all PeopleTools-accessible data and can additionally cause a partial denial of service of the application. No public proof-of-concept was identified at time of analysis, and low attack complexity (AC:L) means the technique is reliable once privileged access is obtained.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Oracle PeopleSoft Enterprise PeopleTools 8.61 through 8.63 exposes a data-disclosure and partial denial-of-service weakness in the Updates Change Assistant component that can be triggered over HTTP with low attack complexity. Exploitation requires the attacker to already hold high (administrative) privileges inside PeopleTools (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L, base 5.5), so the realistic threat actor is a privileged insider or an adversary who has already compromised an administrative account rather than an unauthenticated outsider. Successful abuse yields unauthorized access to critical - potentially all - PeopleTools-accessible data plus a partial availability impact, with no integrity impact and no user interaction required; no public exploit code or confirmed active exploitation was identified at time of analysis, and the moderate score reflects the heavy PR:H constraint rather than a lack of technical exploitability.

RemediationAI

Apply the fix published in Oracle's October 2026 Critical Patch Update for PeopleSoft Enterprise PeopleTools (advisory: https://www.oracle.com/security-alerts/cpuoct2026.html); the vendor bundles PeopleTools fixes into CPU patches and Change Assistant-driven update packages rather than individual CVEs, and the exact patched PeopleTools build numbers are not enumerated in the available data, so confirm the minimum build for 8.61, 8.62 and 8.63 directly against the CPU advisory before closing the finding. Because the flaw requires high privileges, the highest-value compensating control is credential hygiene on administrative accounts: inventory and reduce the population of PeopleTools accounts with Change Assistant and update-automation rights, enforce MFA at the perimeter for anything fronting PeopleTools administrative interfaces, and rotate credentials for privileged operators - accepting that this reduces but does not eliminate exposure from a compromised admin session. Additionally, restrict network reachability of the Updates Change Assistant HTTP endpoints to a dedicated patch-management VLAN or bastion host and block them at the perimeter, which shrinks the AV:N attack surface; the trade-off is that patch orchestration must then run from approved jump hosts. Enable PeopleSoft audit logging and HTTP access logs on Change Assistant endpoints and alert on unexpected read patterns or aborted update jobs, since the impact signature is bulk data access plus partial availability degradation rather than data modification.

Affected VersionsENISA

PeopleSoft Enterprise PeopleTools 8.61 ≤8.63

Affected Packages

euvd peoplesoft_enterprise_peopletools 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

The affected surface is the Updates Change Assistant component of Oracle PeopleSoft Enterprise PeopleTools, the proprietary middleware/tooling layer (Application Designer, Change Assistant, patching and update automation utilities) that underpins PeopleSoft applications such as HCM, FSCM and Campus Solutions. Change Assistant is the client/server utility used to orchestrate PeopleTools patch and update delivery, and it exposes HTTP-reachable endpoints through which privileged operators drive update jobs; the vulnerability lies in insufficient enforcement of authorization or validation on those HTTP interactions, which lets a caller who is already privileged within PeopleTools reach data and functionality beyond their intended scope. The resulting profile is a confidentiality-dominant exposure (C:H) with a limited, partial availability effect (A:L) and no integrity impact (I:N), consistent with reading or disrupting update-related data rather than modifying it. No CWE identifier was supplied by the vendor or CNA, so the root cause class can only be characterized from the impact and the accompanying 'Authentication Bypass' and 'Denial Of Service' tags: an access-control/authorization weakness on a network-facing administrative interface, where the 'bypass' is of component-level restrictions rather than of the initial PeopleSoft login, given the PR:H prerequisite. Attack complexity is low and no user interaction is needed, so the practical barrier is purely the requirement for pre-existing administrative access.

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Severity by source

Vendor (oracle) PRIMARY 5.5 MEDIUM
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L
vuln.today AI 5.5 MEDIUM

Network HTTP access gives AV:N/AC:L; the attacker must hold high PeopleTools privileges so PR:H; impact is high confidentiality (C:H) and partial DoS (A:L) with no integrity effect.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:L/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
High
Integrity
None
Availability
Low

DescriptionCVE.org

Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Updates Change Assistant). Supported versions that are affected are 8.61-8.63. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all PeopleSoft Enterprise PeopleTools accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of PeopleSoft Enterprise PeopleTools. CVSS 3.1 Base Score 5.5 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L).

Threat Intelligence Overview

EPSS Score
0.4%
Top 66% exploitable
Prevalence
Medium
major enterprise ERP, but narrower footprint than core web stacks
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 0.4%
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

28
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
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.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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