CVE-2026-8858

HIGH
MEDIUM Priority: 0.04 BB Relevance: 63/100
Published: 2026-06-22 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
ibm i 7.3 – 7.6

Bug Bounty Relevance

63 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.41%
Raw Score 0.004100
Percentile 35.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00410
2026-10-28
0.00410

Intelligence Sources

nvd ref →