CVE-2026-8858

HIGH EPSS 17.3%

Published Jun 22, 20261w ago · Modified Jun 23, 20266d ago

8.8 CVSS 3.1

High

Published Jun 22, 2026 1w ago

Last Modified Jun 23, 2026 6d ago

Description

IBM i 7.6, 7.5, 7.4, and 7.3, 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.

CVSS Details

Base Score

8.8

Exploitability

2.8

Impact

5.9

Vector string

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector Adjacent

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

17.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-94 Improper Control of Generation of Code (Code Injection) Injection

Affected Products 2

Vendor	Product	Version	Range
ibm	i	*	≥7.3 – ≤7.6
ibm	i	*	any

References 1

ibm.com https://www.ibm.com/support/pages/node/7277344

Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.