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TI-2026-09974 Aliases CVE-2026-11549GHSA-c3g2-rhrj-675h

IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty Improper Access Control

Priority LOW 35CWE-284Published · Updated

Key facts

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

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

Summary

IBM WebSphere Application Server 8.5 and 9.0, and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 are affected by a virtual host bypass vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00327 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
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
IBMWebSphere Application Server9.0; 8.5—No fix listedCNA
IBMWebSphere Application Server - Liberty17.0.0.3 – 26.0.0.5—No fix listedCNA
  • WebSphere Application Server VendorIBM Affected 9.0; 8.5 Fixed in — No fix listed CNA
  • WebSphere Application Server - Liberty VendorIBM Affected 17.0.0.3 – 26.0.0.5 Fixed in — No fix listed CNA

CPE names CNA · 6

CPEVersionsRoleVendor
cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*9.0—IBM
cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*9.0.0—IBM
cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*8.5—IBM
cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*8.5.0—IBM
cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*17.0.0.3—IBM
cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.8:*:*:*:*:*:*:*26.0.0.8—IBM
  • cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:* Versions 9.0 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:* Versions 9.0.0 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:* Versions 8.5 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:* Versions 8.5.0 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:* Versions 17.0.0.3 — ·IBM
  • cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.8:*:*:*:*:*:*:* Versions 26.0.0.8 — ·IBM

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

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

  • Advisory ·

    IBM WebSphere Application Server, WebSphere Application Server - Liberty — ibm.com/support/pages/node/7286611

    7 records Highest priority Priority LOW 7 LOW

    Other records, highest priority first

    • TI-2026-13154 IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty Request SmugglingPriority LOW 35
    • TI-2026-12968 IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty Open RedirectPriority LOW 35
    • TI-2026-12956 IBM WebSphere Application Server IBM WebSphere Application Server - Liberty HTTP Request SmugglingPriority LOW 35
    Show all 7 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-11549
  2. 2026-10-03 Alias added: GHSA-c3g2-rhrj-675h
  3. 2026-10-22 Title updated · CNA
  4. 2026-10-22 Affected versions changed · CNA
  5. 2026-10-22 2 new references · CNA

References

Patch 2

  • TI-2026-08085 Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-23774 IBM Aspera Faspex code execution KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-03794 Improper authentication in IBM Data Risk Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-03441 Code injection in IBM Planning Analytics KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-03639 Improper handling of exceptional conditions in Apache Struts KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-06198 Serialized-object interfaces in certain IBM analytics, business solutions, cognitive, IT… KEVCVSS 3.1CRITICAL 9.8
See all 9711 →

Sources

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