CVE-2026-61307: PeopleSoft Auth Bypass Vulnerability

CVE-2026-61307 Overview

CVE-2026-61307 is a high-severity access control vulnerability in the Oracle PeopleSoft Enterprise CC Common Application Objects component of Oracle PeopleSoft. The affected version is 9.2. An unauthenticated attacker with network access via Oracle Net can compromise the component, though exploitation requires overcoming significant conditions. Successful attacks can result in complete takeover of PeopleSoft Enterprise CC Common Application Objects, impacting confidentiality, integrity, and availability. The weakness is categorized under [CWE-284] Improper Access Control.

Critical Impact
Successful exploitation grants an unauthenticated remote attacker full takeover of the PeopleSoft Enterprise CC Common Application Objects component, exposing sensitive enterprise data and business logic.

Affected Products

Oracle PeopleSoft Enterprise CC Common Application Objects 9.2
Component: Common Application Objects
Network protocol: Oracle Net

Discovery Timeline

2026-08-18 - CVE-2026-61307 published to NVD
2026-08-20 - Last updated in NVD database
Oracle published the associated advisory in the Oracle Security Alert

Technical Details for CVE-2026-61307

Vulnerability Analysis

CVE-2026-61307 resides in the PeopleSoft Enterprise CC Common Application Objects module, a shared library used across PeopleSoft applications. The flaw allows an unauthenticated attacker to bypass access controls when interacting with the affected component over Oracle Net. Exploitation does not require user interaction or existing privileges, but the attack complexity is elevated because it depends on specific runtime conditions. When those conditions align, an attacker can read, modify, or destroy data managed by the Common Application Objects layer.

Because Common Application Objects underpins many downstream PeopleSoft modules, a compromise cascades into linked business processes such as human resources, finance, and campus solutions data.

Root Cause

The root cause is improper access control ([CWE-284]) within the Common Application Objects component. The component does not consistently enforce authentication and authorization on requests received through Oracle Net, allowing unauthenticated callers to reach privileged code paths. Oracle has not published low-level technical details, and no proof-of-concept code is publicly available.

Attack Vector

The attack vector is network-based over Oracle Net, typically TCP port 1521 or an environment-specific listener port. The attacker must reach the Oracle Net listener servicing the PeopleSoft database or application tier. No credentials, user interaction, or prior foothold are required. The high attack complexity reflects race conditions, timing, or configuration prerequisites that must be satisfied.

Refer to the Oracle Security Alert for authoritative technical guidance.

Detection Methods for CVE-2026-61307

Indicators of Compromise

Unexpected Oracle Net connections to PeopleSoft database listeners from untrusted source networks or geographies.
Anomalous PeopleSoft application server activity referencing Common Application Objects functions outside normal business workflows.
Newly created or modified PeopleSoft security definitions, roles, or permission lists without a corresponding change ticket.
Unusual outbound connections or data staging from PeopleSoft application or database hosts.

Detection Strategies

Monitor Oracle Net listener logs for connections originating outside authorized management subnets.
Correlate PeopleSoft application server audit trails with database session activity to surface unauthenticated or unattributed sessions.
Alert on privilege changes, mass data reads, or configuration writes touching Common Application Objects tables.

Monitoring Recommendations

Ingest Oracle listener, PeopleSoft audit, and OS-level telemetry from application and database tiers into a centralized analytics platform.
Baseline normal Oracle Net traffic volumes and source addresses, then alert on deviations.
Track failed and successful authentication attempts at the database and PeopleSoft layers for statistical anomalies.

How to Mitigate CVE-2026-61307

Immediate Actions Required

Apply the Oracle Critical Patch Update referenced in the Oracle Security Alert as soon as maintenance windows allow.
Inventory all PeopleSoft 9.2 instances running Common Application Objects and prioritize internet-exposed or DMZ deployments.
Restrict Oracle Net listener exposure to trusted application tiers and management jump hosts only.

Patch Information

Oracle addressed CVE-2026-61307 in the security update documented at the Oracle Security Alert. Administrators should review the advisory for the specific patch identifiers matching their PeopleSoft 9.2 deployment and apply them following Oracle's standard patch procedure. Validate application functionality in a non-production environment before rolling out to production.

Workarounds

Enforce network segmentation so Oracle Net listeners are unreachable from user, guest, or internet-facing networks.
Configure Oracle Net VALID_NODE_CHECKING (tcp.validnode_checking, tcp.invited_nodes) to allowlist connecting hosts.
Require TLS for Oracle Net connections and disable legacy or unauthenticated listener commands.
Increase logging verbosity on the listener and PeopleSoft application server during the remediation window to aid detection.

bash

# Example Oracle Net listener hardening in sqlnet.ora
tcp.validnode_checking = yes
tcp.invited_nodes = (app-tier-1.example.com, app-tier-2.example.com, mgmt-jump.example.com)
# Restart the listener after changes
lsnrctl stop
lsnrctl start