Improper input validation in Oracle Database Server - CVE-2026-91503
Published: November 10, 2026
Vulnerability identifier: #VU163238
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-91503
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote authenticated user to read and manipulate data.
The vulnerability exists due to improper input validation within the VPD in Oracle Database Server. A remote authenticated user can exploit this vulnerability to read and manipulate data.
Affected software
Oracle Database Server
How to mitigate CVE-2026-91503
Install updates from vendor's website.