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    CVE-2026-8646

    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.

    Published:Jun 22, 2026
    Last Modified:Jun 22, 2026
    EPS:Jun 22, 2026
    EPSS Score:
    CVSS Score:7.4

    Affected Products

    Vendor
    Ibm
    Product
    Websphere Application Server
    Vendor
    Ibm
    Product
    Websphere Application Server Liberty

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-273 HTTP Response Smuggling
    CAPEC-33 HTTP Request Smuggling

    Related CVEs

    CVE-2026-9667 (CVSS 5.3) — IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to server-side request forgery (SSRF) that could a…
    CVE-2026-9176 (CVSS 6.7) — IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a security bypass due to improper authenticatio…
    CVE-2026-9327 (CVSS 6.3) — IBM WebSphere Application Server 9.0, and 8.5 could allow an authenticated user with a low-privilege administr…
    CVE-2026-9336 (CVSS 6.5) — IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specia…
    CVE-2026-9338 (CVSS 5.3) — IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specia…
    CVE-2026-14525 (CVSS 9.4) — IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 IBM WebSphere Application Server Liberty …
    CVE-2026-10571 (CVSS 5.7) — IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by a denial of service caused…
    CVE-2026-18499 (CVSS 8.1) — IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is vulnerable to a privilege escalation w…
    CVE-2026-8400 (CVSS 8.1) — IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty Continuous delive…
    CVE-2026-11536 (CVSS 8.5) — IBM WebSphere Application Server 9.0, and 8.5 is affected by a remote code execution vulnerability in the SOAP…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High