CVE-2026-8620 | BDVDB-2026-334939 Detail

IBMWeb Server Plug-ins for WebSphere Application Server and WebSphere Liberty

Description#

IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to HTTP request smuggling in the Web Server Plug-ins through a specially crafted request.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact low, availability impact none. Attack vector: network.

Weaknesses#

CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

References#

https://www.ibm.com/support/pages/node/7274072

Exploit#

No public exploit known

History#

Version 12026-05-26Record published in the CVE List.
Version 22026-05-27Most recent update recorded in the CVE List.

Published

Published: 2026-05-26
Last modified: 2026-05-27

Vendor information

Vendor: IBM
Product: Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty

All IBM vulnerabilities

Score

7.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 20.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 8.5, 9.0 and <= Interim Fix 002
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Changed
Confidentiality	High
Integrity	Low
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).