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PeopleSoft PeopleTools CVE-2026-101411

| EUVDEUVD-2026-105827 HIGH
Improper Access Control (CWE-284)
2026-10-20 secalert_us@oracle.com GHSA-9mqr-f74q-rrqw
8.1
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
    Reach PeopleSoft HTTP endpoint remotely
  2. Delivery
    Craft malicious Business Interlink request
  3. Exploit
    Satisfy high-complexity trigger conditions
  4. Execution
    Exploit flaw unauthenticated
  5. Impact
    Full takeover of PeopleTools

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 network HTTP access to a PeopleSoft Enterprise PeopleTools 8.61-8.63 instance whose Business Interlink integration component is reachable/in use; no authentication (PR:N) and no user interaction (UI:N) are needed. The principal limiting factor is high attack complexity (AC:H) - Oracle labels it 'Difficult to exploit' - meaning the attacker must meet conditions beyond their control (e.g., specific environmental, configuration, or timing state) for a successful attack, which materially reduces real-world exploitability despite the unauthenticated network vector. Internet-exposed PeopleSoft portals increase reachability risk; instances not exposing the Business Interlink pathway are correspondingly less exposed.

Impact

This is a genuinely serious but not top-tier-urgent vulnerability. The CVSS 3.1 base score of 8.1 (High) is driven by network reachability (AV:N), no privileges (PR:N), no user interaction (UI:N), and full compromise of confidentiality, integrity and availability (C:H/I:H/A:H) - Oracle explicitly describes the outcome as 'takeover' of PeopleSoft Enterprise PeopleTools. The single factor holding the score below critical is high attack complexity (AC:H), which Oracle restates in plain language as 'Difficult to exploit.' No EPSS score was provided in the input, so exploitation probability cannot be quantified. The CVE is not listed in CISA KEV and no proof-of-concept is referenced (the only source is the Oracle October 2026 Critical Patch Update advisory), so the status is: no public exploit identified at time of analysis. No SSVC decision data was supplied. Signals are therefore consistent rather than conflicting: a high-impact, unauthenticated, network-exploitable flaw whose practical risk is tempered by genuine exploitation difficulty and the absence of any public exploit or active-exploitation evidence. Treat it as a high-priority patch within the normal Oracle CPU cycle for exposed PeopleSoft estates, but it does not currently warrant emergency out-of-band response. Note: the EUVD/input Tags label this 'Information Disclosure,' which understates a vulnerability Oracle describes as full takeover with integrity and availability impact - do not scope remediation around data-leak assumptions alone.

Exploit ScenarioDerived

An unauthenticated attacker who can reach the PeopleSoft web/integration tier over HTTP sends specially crafted requests against the Business Interlink component to achieve full compromise of the PeopleTools environment. Because attack complexity is high (AC:H), the attacker must satisfy conditions outside their direct control - such as specific timing, configuration, or environmental state - so reliable exploitation is non-trivial. No public exploit code is known at time of analysis, so initial exploitation would likely require original research.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Unauthenticated network attackers can achieve full takeover of Oracle PeopleSoft Enterprise PeopleTools 8.61 through 8.63 through the Business Interlink component, though the high attack complexity - Oracle characterizes the flaw as 'difficult to exploit' - means success depends on conditions beyond the attacker's control, which materially reduces real-world exploitability. The vulnerability carries a CVSS 3.1 base score of 8.1 with complete confidentiality, integrity, and availability impact; no public exploit was identified at time of analysis. This is a genuinely serious but not top-tier-urgent issue, and risk concentrates on internet-exposed PeopleSoft portals where Business Interlink is reachable or in active use.

RemediationAI

Apply the Oracle Critical Patch Update for October 2026, which is the vendor-released patch per the advisory at https://www.oracle.com/security-alerts/cpuoct2026.html; the available data does not specify an exact PeopleTools patch or bundle version, so confirm the applicable patch number against Oracle's My Oracle Support patch matrix for your 8.61, 8.62, or 8.63 installation before scheduling the update. Because exploitation is unauthenticated over HTTP, reduce reachability in the interim by restricting network access to PeopleSoft web and integration endpoints to trusted users, proxies, and integration hosts through firewall rules or a reverse proxy with allowlisting - the trade-off is that legitimate remote users and external integration partners lose direct access unless their source ranges are explicitly permitted. Where Business Interlink integrations are not required, disable or remove the corresponding integration configuration and endpoints, accepting that dependent external-system integrations will stop functioning until re-enabled. Monitor web and integration-tier logs for anomalous requests to Business Interlink paths and for signs of post-exploitation changes, and prioritize internet-exposed portals over internally segmented deployments when sequencing patching.

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 flaw sits in the Business Interlink component of Oracle PeopleSoft Enterprise PeopleTools, the underlying application platform and development framework on which PeopleSoft applications such as HCM and Financials run. Business Interlink is part of the integration layer that lets PeopleSoft components invoke external systems and services, which means the affected code path is typically reachable over HTTP from the application tier rather than requiring local access. Oracle did not publish a CWE mapping, so the precise root-cause class - for example an access-control, input-validation, or deserialization weakness - is not confirmed by the available data; the CVSS vector (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) describes the outcome rather than the mechanism: a remote, unauthenticated, no-interaction attack that is gated by high complexity and yields full compromise of confidentiality, integrity, and availability of the PeopleTools instance. The AC:H rating is the key analytical signal and should be read as requiring a specific environmental, configuration, or timing precondition - such as a particular Business Interlink configuration or integration state - before exploitation succeeds, rather than as a claim that exploitation is trivial.

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Severity by source

Vendor (oracle) PRIMARY 8.1 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 8.1 HIGH

Unauthenticated HTTP-reachable (AV:N/PR:N/UI:N) with vendor-confirmed takeover (C:H/I:H/A:H); AC:H reflects Oracle's 'difficult to exploit' conditions outside attacker control.

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

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

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

DescriptionCVE.org

Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Business Interlink). Supported versions that are affected are 8.61-8.63. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools. Successful attacks of this vulnerability can result in takeover of PeopleSoft Enterprise PeopleTools. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Executive ViewAI

Why It Matters

Oracle PeopleSoft Enterprise PeopleTools (versions 8.61 through 8.63) has a high-severity vulnerability in the Business Interlink component that could allow an external party to take full control of affected systems, exposing HR and ERP data. No public exploit identified at time of analysis and no vendor-released patch identified at time of analysis, so leadership should focus immediate efforts on reducing internet exposure of PeopleSoft portals while awaiting a fix.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis; restrict network access to the Business Interlink component via ACLs, WAF, or segmentation, disable or remove the component where not required, and monitor for anomalous activity on internet-exposed PeopleSoft portals.

Threat Intelligence Overview

EPSS Score
0.4%
Top 70% exploitable
Prevalence
Medium
Oracle ERP/HR suite common in large enterprises, universities, government; not universal
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 HIGH
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
High

Priority Score

40
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +40
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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