CVE-2026-61139 Overview
CVE-2026-61139 is an authorization vulnerability in the Oracle Public Sector Financials (International) component of Oracle E-Business Suite. The flaw affects the Authorization subcomponent and impacts supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access over HTTP can exploit this issue without user interaction. Successful exploitation permits unauthorized update, insert, or delete operations against a subset of application data, read access to a subset of data, and a partial denial of service against the affected application. The weakness is classified under [CWE-284: Improper Access Control].
Critical Impact
Authenticated network-based attackers can modify, read, and partially disrupt Oracle Public Sector Financials (International) data through improper authorization checks.
Affected Products
- Oracle E-Business Suite - Public Sector Financials (International) 12.2.3
- Oracle E-Business Suite - Public Sector Financials (International) versions 12.2.4 through 12.2.14
- Oracle E-Business Suite - Public Sector Financials (International) 12.2.15
Discovery Timeline
- 2026-08-18 - CVE-2026-61139 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-61139
Vulnerability Analysis
The vulnerability resides in the Authorization component of Oracle Public Sector Financials (International), part of the Oracle E-Business Suite. Authenticated users with low privileges can send crafted HTTP requests that bypass authorization checks intended to restrict data operations. The exploit path is remote and does not require user interaction, which lowers the operational cost of exploitation for an insider or an attacker holding a foothold with valid application credentials. Impacts span all three CIA dimensions but are constrained in scope, resulting in partial rather than full compromise of the application. According to the current EPSS estimate, in-the-wild exploitation probability remains low, though authorization flaws in enterprise resource planning (ERP) stacks are attractive to attackers seeking financial data manipulation.
Root Cause
The root cause is improper access control ([CWE-284]) within the Authorization subcomponent. Authorization decisions do not sufficiently validate the requesting user's entitlement to the target data or action, permitting operations that should be restricted to higher-privileged roles.
Attack Vector
Exploitation is performed over the network using HTTP against an exposed Oracle E-Business Suite instance. The attacker must possess valid low-privileged credentials on the target application. No user interaction is required, and attack complexity is low. See the Oracle Security Alert for vendor guidance and additional context.
Detection Methods for CVE-2026-61139
Indicators of Compromise
- Unexpected INSERT, UPDATE, or DELETE operations on Public Sector Financials (International) tables originating from low-privileged application accounts.
- HTTP requests to E-Business Suite endpoints from accounts that do not normally interact with the Public Sector Financials (International) module.
- Application-tier errors or transient unavailability consistent with partial denial-of-service conditions in the affected module.
Detection Strategies
- Enable Oracle E-Business Suite auditing on Public Sector Financials (International) tables and review changes made by low-privileged users.
- Correlate application server access logs with database audit records to identify authorization anomalies where users perform operations outside their expected role scope.
- Baseline normal HTTP request patterns per role and alert on deviations targeting Public Sector Financials (International) URLs.
Monitoring Recommendations
- Forward Oracle E-Business Suite application, middleware, and database audit logs to a centralized SIEM for cross-source correlation.
- Monitor for privilege-inconsistent data modifications and flag write operations by accounts historically limited to read activity.
- Track availability metrics for the Public Sector Financials (International) module to detect partial denial-of-service symptoms early.
How to Mitigate CVE-2026-61139
Immediate Actions Required
- Apply the patch published in the Oracle Security Alert to all affected Oracle E-Business Suite instances running versions 12.2.3 through 12.2.15.
- Inventory all Oracle E-Business Suite deployments and confirm whether the Public Sector Financials (International) module is enabled.
- Review and tighten role assignments to ensure the principle of least privilege for accounts able to authenticate to the application.
Patch Information
Oracle addressed CVE-2026-61139 in its August 2026 Critical Patch Update cycle. Refer to the Oracle Security Alert for patch identifiers, prerequisites, and installation instructions specific to each affected release of Oracle E-Business Suite 12.2.x.
Workarounds
- Restrict network access to the Oracle E-Business Suite application tier using firewalls, VPNs, or reverse proxies to limit exposure to trusted users only.
- Disable or restrict access to the Public Sector Financials (International) module for user populations that do not require it until patching is complete.
- Increase audit granularity on sensitive tables and forms within the affected module to detect exploitation attempts pending remediation.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
