Is CVE-2026-8620 actively exploited?

No active exploitation of CVE-2026-8620 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-8620 be exploited remotely?

Yes. CVE-2026-8620 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-8620?

CVE-2026-8620 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-8620

HIGH

CVE-2026-8620

CWE-444Published: May 26, 2026· Updated: May 26, 2026

7.5

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2026-8620 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.