Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Network HTTP reach with low complexity but requires pre-existing high application privilege (PR:H); full takeover gives C:H/I:H/A:H with no scope change.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the PeopleSoft Enterprise FIN Billing Argentina product of Oracle PeopleSoft (component: Billing). The supported version that is affected is 9.1. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise PeopleSoft Enterprise FIN Billing Argentina. Successful attacks of this vulnerability can result in takeover of PeopleSoft Enterprise FIN Billing Argentina. CVSS 3.1 Base Score 7.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
AnalysisAI
Full compromise (takeover) of Oracle PeopleSoft Enterprise FIN Billing Argentina 9.1 is possible by a high-privileged attacker with network access over HTTP, per Oracle's July 2026 Critical Patch Update. Successful attacks yield complete confidentiality, integrity, and availability loss of the Billing component. No public exploit identified at time of analysis and it is not listed in CISA KEV, though Oracle rates the attack complexity as low (easily exploitable) once the required privileges are held.
Technical ContextAI
The affected component is the Billing module of Oracle PeopleSoft Enterprise Financials (FIN), specifically the Argentina country-localization package for tax/invoicing compliance. PeopleSoft is a Java/Tomcat-based enterprise ERP running on the PeopleTools application server and PIA (PeopleSoft Internet Architecture) web tier, typically fronted by WebLogic. Oracle did not assign a CWE (CWE: N/A) and characterizes the flaw only as enabling 'takeover' with Information Disclosure among the tagged effects; the precise root-cause class (e.g., injection, deserialization, or access-control flaw) is not disclosed in the available data. Because exploitation requires high privileges (PR:H), the flaw most plausibly represents a privilege-escalation or authorized-function-abuse path rather than an unauthenticated pre-auth bug.
RemediationAI
Apply the fixes delivered in Oracle's July 2026 Critical Patch Update (Patch available per vendor advisory) documented at https://www.oracle.com/security-alerts/cpujul2026.html; no discrete fixed build number is provided in the input, so obtain the exact PeopleSoft/PeopleTools patch set from My Oracle Support for version 9.1. As compensating controls until patching, restrict which accounts hold high-privilege Billing roles (the exploit prerequisite) by reviewing PeopleSoft permission lists and roles, limit HTTP access to the PIA/Billing endpoints to trusted administrative networks via network segmentation or WAF allow-listing, and enable enhanced auditing of privileged Billing transactions to detect abuse - trade-offs are added administrative overhead and potential disruption to legitimate finance operators who legitimately need those roles. Do not rely on network controls alone since the attacker already requires elevated application privileges.
Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-47279
GHSA-9jg3-26ph-pmv4