Read the docs
TI-2026-77550 Aliases CVE-2026-91502GHSA-6gm4-rmfh-f9xr

Missing authentication in Oracle WebLogic Server Core component

Priority LOW 38CWE-306Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

Oracle WebLogic Server in Oracle Fusion Middleware (component: Core) is affected in supported versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. A missing authentication check for a critical function (CWE-306) lets an unauthenticated attacker with network access via TLS compromise the server. Successful attacks can update, insert or delete some accessible data, read a subset of it, and partially deny service.

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

Description from the CNA

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and 15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle WebLogic Server accessible data as well as unauthorized read access to a subset of Oracle WebLogic Server accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle WebLogic Server. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00288 21st 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
Yes
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 WebLogic Server12.2.1.4.0; 14.1.1.0.0; 14.1.2.0.0; 15.1.1.0.0—No fix listedCNA
  • Oracle WebLogic Server VendorOracle Affected 12.2.1.4.0; 14.1.1.0.0; 14.1.2.0.0; 15.1.1.0.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:oracle:weblogic_server:*:*:*:*:*:*:*:*——Oracle
  • cpe:2.3:a:oracle:weblogic_server:*:*:*:*:*:*:*:* Versions — — ·Oracle

Remediation

The sources list no fixed version for Oracle WebLogic 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 WebLogic Server — oracle.com/security-alerts/cpuoct2026.html

    5 records Highest priority Priority MEDIUM 3 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-77382 Authentication flaw in Oracle WebLogic Server allows remote takeoverPriority MEDIUM 49
    • TI-2026-77109 Missing authentication in Oracle WebLogic Server enables takeoverPriority MEDIUM 49
    • TI-2026-77143 Improper authentication in Oracle WebLogic Server CorePriority MEDIUM 48
    Show all 5 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91502
  2. 2026-10-21 Alias added: GHSA-6gm4-rmfh-f9xr
  3. 2026-10-22 Priority changed: MEDIUM → LOW
  4. 2026-10-24 Weakness changed · CISA ADP
  5. 2026-10-24 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