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TI-2026-77592 Aliases CVE-2026-91568GHSA-9vw7-927p-3rjf

Access control flaw in Oracle Database Server RDBMS exposes data

Priority LOW 34CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

Oracle Database Server versions 23.4.0 through 23.26.3 are affected by a flaw in the RDBMS component. Improper access control (CWE-284) lets a low-privileged attacker who holds the Create Session privilege compromise RDBMS over network access through Oracle Net. The attack can also significantly impact additional products, and successful attacks can expose critical data or all RDBMS-accessible data.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via Oracle Net to compromise RDBMS. While the vulnerability is in RDBMS, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all RDBMS accessible data. CVSS 3.1 Base Score 7.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00326 25th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OracleOracle Database Server23.4.0 – 23.26.3—No fix listedCNA
  • Oracle Database Server VendorOracle Affected 23.4.0 – 23.26.3 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Oracle Database Server.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Oracle Database Server — oracle.com/security-alerts/cpuoct2026.html

    7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2026-77548 Privilege management flaw in Oracle Database Server RDBMS componentPriority MEDIUM 40
    • TI-2026-77551 Improper access control in Oracle Database Server VPD componentPriority LOW 37
    • TI-2026-77825 Oracle Database Server RDBMS improper access control exposes dataPriority LOW 29
    Show all 7 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91568
  2. 2026-10-21 Alias added: GHSA-9vw7-927p-3rjf
  3. 2026-10-22 Priority changed: MEDIUM → LOW
  4. 2026-10-26 Weakness changed · CISA ADP
  5. 2026-10-26 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-34425 Improper privilege management in Oracle Payments KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-27421 Missing authentication in Oracle PeopleSoft Enterprise PeopleTools KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-17661 Improper access control in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-38252 Improper authentication in Oracle Concurrent Processing KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-38151 Missing authentication in Oracle Identity Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
See all 14200 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences