PT-2026-51346 · Ibm · Ibm I+3

Published 2026-06-22 · Updated 2026-06-23 · CVE-2026-8858

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions IBM WebSphere Application Server (affected versions not specified) IBM WebSphere Application Server Liberty (affected versions not specified) IBM i versions 7.3 through 7.6

Description The WebSphere Web Server Plug-in component is susceptible to remote code execution and denial of service. This occurs when an attacker impersonates the application server to send crafted responses to the plug-in.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-8858

Affected Products

Ibm I

Ibm Websphere Application Server

Ibm Websphere Application Server Liberty

Websphere Webserver Plug-In

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-8858 · Security Note
• https://ibm.com/support/pages/node/7277344 · Patch, Vendor Advisory
• https://t.me/cveNotify/173544 · Telegram Post