Vulnerability intelligence

CVE-2026-8620

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.

CVSS Score

7.5

High

EPSS — Exploit Probability

0.3%

Riskier than 20% of all CVEs

Exploitation

Not in CISA KEV

No federal exploitation record

Remediation

Patch available

Vendor fix published

NVD entry Vendor patch PoC / advisory

1 article across 1 outlet · first covered May 30, 2026 · latest May 30, 2026

Coverage timeline

IBM flags critical WebSphere CVE-2026-8633 flaw in versions
securityonline.info · May 30, 2026