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TI-2026-77300 Aliases CVE-2026-91240GHSA-8cg2-mr66-2ffg

Oracle WebCenter Sites access control flaw exposes data over HTTP

Priority LOW 26CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
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 WebCenter Sites, part of Oracle Fusion Middleware, has an improper access control flaw (CWE-284) in versions 12.2.1.4.0 and 14.1.2.0.0. An unauthenticated attacker with network access via HTTP can exploit it, but exploitation is difficult. A successful attack can give unauthorized access to critical data or to all data accessible to WebCenter Sites. The CVSS 3.1 base score is 5.9 (medium), with impact on confidentiality only, and CISA has not added it to KEV; its SSVC assessment shows no exploitation.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Sites. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle WebCenter Sites accessible data. CVSS 3.1 Base Score 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0031 23rd 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 WebCenter Sites12.2.1.4.0; 14.1.2.0.0—No fix listedCNA
  • Oracle WebCenter Sites VendorOracle Affected 12.2.1.4.0; 14.1.2.0.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for versions 12.2.1.4.0 or 14.1.2.0.0. Restrict network access to WebCenter Sites HTTP interfaces until a fixed release is available, and check Oracle's security advisories for one.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fixed in the same release

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

  • Advisory ·

    Oracle WebCenter Sites — oracle.com/security-alerts/cpuoct2026.html

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-77813 Oracle WebCenter Sites authentication flaw allows unauthenticated takeoverPriority MEDIUM 50
    • TI-2026-77583 Information exposure in Oracle WebCenter SitesPriority LOW 39
    • TI-2026-77577 Sensitive data exposure in Oracle WebCenter SitesPriority LOW 39
    Show all 4 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91240
  2. 2026-10-21 Alias added: GHSA-8cg2-mr66-2ffg
  3. 2026-10-22 Priority changed: MEDIUM → LOW
  4. 2026-10-28 Weakness changed · CISA ADP
  5. 2026-10-28 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