--- title: "CVE-2026-91568: Oracle Database Server - Broken Access Control" description: "Oracle Database Server 23.4.0-23.26.3 contains an unauthorized access vulnerability caused by improper access control in RDBMS, letting low privileged attackers with Create Session privilege access critical data via Oracle Net, exploit requires network access and Create Session privilege." url: https://panop.io/threat-heartbeat/CVE-2026-91568/ --- # CVE-2026-91568 Oracle Database Server - Broken Access Control Oracle Database Server 23.4.0-23.26.3 contains an unauthorized access vulnerability caused by improper access control in RDBMS, letting low privileged attackers with Create Session privilege access critical data via Oracle Net, exploit requires network access and Create Session privilege. CVSS base score 7.7 /10 High CISA KEV Not listed Public exploit None known Authentication Required [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-91568) ## Details Type Broken Access Control Impact Information Disclosure CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Published 20 October 2026 Updated 21 October 2026 ## Vendor fix Update to a version later than 23.26.3 or the latest available version. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-91568](https://nvd.nist.gov/vuln/detail/CVE-2026-91568) - [https://www.oracle.com/security-alerts/cpuoct2026.html](https://www.oracle.com/security-alerts/cpuoct2026.html) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)