Read the docs
TI-2026-07781 Aliases CVE-2026-8858GHSA-mfq9-47xf-5654

WebSphere Application Server Remote Code Execution

Priority MEDIUM 40CWE-94Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-94.

Summary

IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0041 35th 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
Total

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 Server8.5; 9.0—No fix listedCNA
  • WebSphere Application Server VendorIBM Affected 8.5; 9.0 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:ibm:i:*:*:*:*:*:*:*:*7.3 – 7.6VulnerableIBM
cpe:2.3:o:ibm:i:-:*:*:*:*:*:*:*not specified by NVDRunning onIBM
  • cpe:2.3:a:ibm:i:*:*:*:*:*:*:*:* Versions 7.3 – 7.6 Vulnerable ·IBM
  • cpe:2.3:o:ibm:i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·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 — ibm.com/support/pages/node/7276560

    3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-07970 WebSphere Application Server Remote Code ExecutionPriority MEDIUM 44
    • TI-2026-09316 Websphere Application Server is Affected By a Denial of ServicePriority LOW 33
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-8858
  2. 2026-10-03 Alias added: GHSA-mfq9-47xf-5654

References

Patch 1

  • TI-2024-18115 IBM i privilege escalation CVSS 3.1HIGH 7.8
  • TI-2026-14283 IBM i is Affected By Remote Code Execution Vulnerability in Line Printer Daemon [] CVSS 3.1CRITICAL 9.8
  • TI-2023-14729 IBM i command execution CVSS 3.1CRITICAL 9.8
  • TI-2026-14279 IBM i is Affected By Denial of Service Vulnerabilities in NFS [, ] CVSS 3.1CRITICAL 9.1
  • TI-2026-14196 IBM i is Affected By Denial of Service Vulnerabilities in NFS [, ] CVSS 3.1CRITICAL 9.1
  • TI-2026-13994 IBM i is Affected By Multiple Vulnerabilities in Simple Mail Transfer Protocol CVSS 3.1CRITICAL 9.1
See all 207 →

Sources

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