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Websphere Application Server CVE-2026-15064

| EUVDEUVD-2026-50024 HIGH
HTTP Request/Response Smuggling (CWE-444)
2026-07-28 ibm GHSA-cgw7-p7f6-2pjh
Request Smuggling IBM Information Disclosure Websphere Application Server Websphere Application Server Liberty
8.7
CVSS 3.1 · Vendor: ibm
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Severity by source

Vendor (ibm) PRIMARY
8.7 HIGH
AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Primary rating from Vendor (ibm) · only source for this CVE.

CVSS VectorVendor: ibm

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

2
Analysis Generated
Jul 28, 2026 - 21:02 vuln.today
CVE Published
Jul 28, 2026 - 20:10 cve.org
HIGH 8.7

DescriptionCVE.org

IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to HTTP Response Smuggling due to improper handling of non-standard HTTP version tokens.

AnalysisAI

HTTP response smuggling in IBM WebSphere Application Server 9.0, 8.5, and Liberty versions 17.0.0.3 through 26.0.0.7 allows unauthenticated remote attackers to poison intermediate caching proxies by exploiting improper handling of non-standard HTTP version tokens. Successful exploitation leads to high confidentiality and integrity impact through cache poisoning, potentially enabling information disclosure and malicious content injection into proxied responses. …

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CVE-2026-15064 vulnerability details – vuln.today
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