CVE-2026-8646

EUVD-2026-38251
IBM WebSphere Application Server 9.0 and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to HTTP request smuggling. A remote attacker could smuggle a specially crafted request to the application server thereby allowing the attacker to bypass security controls, spoof identity, escalate privilege, and expose sensitive information.
HTTP Request/Response Smuggling
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
ibmCNA
7.4 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 29.2%
Affected Products (NVD)
VendorProductVersion
ibmwebsphere_application_server
8.5.0.0 ≤
𝑥
< 8.5.5.30
ibmwebsphere_application_server
9.0.0.0 ≤
𝑥
< 9.0.5.29
ibmwebsphere_application_server
17.0.0.3 ≤
𝑥
< 26.0.0.7
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
ibmwebsphere
9.0.0 ≤
CNA
ibmwebsphere
8.5.0 ≤
CNA
ibmwebsphere
17.0.0.3 ≤
𝑥
≤ 26.0.0.6
CNA