CVE-2026-8858

Published Jun 22, 2026

Last updated 2 days ago

Overview

Description
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.
Source
psirt@us.ibm.com
NVD status
Modified
Products
i

Risk scores

CVSS 3.1

Type
Primary
Base score
8.8
Impact score
5.9
Exploitability score
2.8
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

psirt@us.ibm.com
CWE-94

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.