CVE-2026-62519: Oracle Succession Planning Auth Bypass

CVE-2026-62519 Overview

CVE-2026-62519 is an input validation vulnerability [CWE-20] in the Oracle Succession planning product of Oracle E-Business Suite. The flaw affects the Succession plan component in supported versions 12.2.3 through 12.2.15. An authenticated attacker with low privileges can exploit the issue remotely over HTTP without user interaction. Successful exploitation permits unauthorized update, insert, or delete access to a subset of Succession planning data. Attackers also gain unauthorized read access to a subset of data and can trigger a partial denial of service. Oracle addressed the issue in the July 2026 Critical Patch Update.

Critical Impact
Authenticated remote attackers can modify and read a subset of Succession planning data and cause partial denial of service against Oracle E-Business Suite deployments.

Affected Products

Oracle E-Business Suite — Oracle Succession planning 12.2.3
Oracle E-Business Suite — Oracle Succession planning 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle Succession planning 12.2.15

Discovery Timeline

2026-07-21 - Oracle publishes the July 2026 Critical Patch Update including CVE-2026-62519
2026-07-21 - CVE-2026-62519 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-62519

Vulnerability Analysis

The vulnerability resides in the Succession plan component of the Oracle Succession planning module within Oracle E-Business Suite. Oracle classifies the flaw as an input validation weakness [CWE-20]. An attacker only needs low privileges to exploit the issue over the network via HTTP, and no user interaction is required.

Successful exploitation impacts confidentiality, integrity, and availability at a limited scope. The attacker can perform unauthorized insert, update, or delete operations on a subset of Succession planning accessible data. The same access path enables unauthorized read access to a subset of that data and can induce a partial denial of service against the Succession planning module.

The EPSS score for this issue is 0.272% with a percentile of 19.252, indicating a low current forecast of exploitation. Oracle did not disclose exploit availability, and CISA has not added CVE-2026-62519 to the Known Exploited Vulnerabilities catalog.

Root Cause

Oracle categorizes the vulnerability under CWE-20 (Improper Input Validation). The Succession plan component fails to properly validate input received through authenticated HTTP requests before acting on it in downstream data operations. Oracle has not published detailed root cause information beyond the advisory summary.

Attack Vector

The attack vector is network based. An attacker authenticates to the Oracle E-Business Suite instance with a low-privileged account, then submits crafted HTTP requests to the Succession planning module. Because the component does not fully validate the request parameters, the attacker can direct the application to read, modify, or remove records outside their intended scope and can degrade the availability of the module. See the Oracle Critical Patch Update July 2026 advisory for the vendor description.

No verified public proof-of-concept code is available. Refer to the Oracle advisory for the authoritative technical description.

Detection Methods for CVE-2026-62519

Indicators of Compromise

Unexpected INSERT, UPDATE, or DELETE activity in Succession planning tables originating from low-privileged application accounts.
Anomalous HTTP requests to Succession plan endpoints containing malformed or out-of-range parameter values.
Repeated errors or timeouts from the Succession planning module suggestive of partial denial-of-service attempts.

Detection Strategies

Correlate Oracle E-Business Suite application audit logs with Succession planning table change history to identify writes performed outside expected business workflows.
Alert on authenticated sessions from low-privileged users that access Succession plan URLs at abnormal volumes or with anomalous parameter patterns.
Baseline normal HTTP request structures to the Succession planning module and flag deviations for review.

Monitoring Recommendations

Ingest Oracle E-Business Suite application, database, and web tier logs into a centralized SIEM for correlation.
Enable Oracle database fine-grained auditing on Succession planning schema objects to record row-level changes.
Monitor for sustained error rates or latency spikes on Succession planning endpoints as indicators of partial denial-of-service activity.

How to Mitigate CVE-2026-62519

Immediate Actions Required

Apply the Oracle July 2026 Critical Patch Update to all Oracle E-Business Suite installations running versions 12.2.3 through 12.2.15.
Inventory user accounts with access to the Succession planning module and remove entitlements that are not required for business operations.
Review Succession planning audit trails for suspicious changes made prior to patch deployment.

Patch Information

Oracle released the fix as part of the Oracle Critical Patch Update July 2026. Administrators should follow Oracle's documented patch application procedures for E-Business Suite 12.2.x and validate the update in a non-production environment before rolling to production.

Workarounds

Restrict network access to Oracle E-Business Suite HTTP endpoints so only trusted internal networks and VPN users can reach the Succession planning module.
Enforce least privilege on Oracle E-Business Suite responsibilities associated with Succession planning until the patch is applied.
Enable enhanced application and database auditing to detect exploitation attempts while patching is scheduled.

bash

# Example: verify current E-Business Suite patch level before/after applying CPU July 2026
adop -status
sqlplus apps/<password> @$AD_TOP/sql/ad_patch_status.sql