{"id":"CVE-2026-15396","revision":"e8594862ce904b3895db6b64f89a4553","records":[{"revision":"e8594862ce904b3895db6b64f89a4553","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-15396","aliases":[],"title":"IBM WebSphere Application Server IBM WebSphere Application Server - Liberty HTTP Request Smuggling","description":"IBM WebSphere Application Server 8.5 and 9.0, and IBM WebSphere Application Server - Liberty 17.0.0.3\u00A0through 26.0.0.8\u00A0are vulnerable to HTTP request smuggling, caused by improper parsing of the HTTP transfer-encoding request header. By sending a specially crafted HTTP transfer-encoding request header, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.","state":0,"publishedAt":"2026-09-14T20:08:38.336+00:00","modifiedAt":"2026-10-22T18:55:25.157+00:00","affected":[{"ecosystem":"Vendor product","name":"WebSphere Application Server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"IBM\",\n                    \"product\": \"WebSphere Application Server\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"9.0\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"8.5\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*\",\n                        \"cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*\",\n                        \"cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*\",\n                        \"cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*\"\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"WebSphere Application Server - Liberty","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"IBM\",\n                    \"product\": \"WebSphere Application Server - Liberty\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"17.0.0.3\",\n                            \"lessThanOrEqual\": \"26.0.0.5\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*\",\n                        \"cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.8:*:*:*:*:*:*:*\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://www.ibm.com/support/pages/node/7286610","https://www.ibm.com/support/pages/node/7286611"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-15396","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-15396","identifiers":["CVE-2026-15396"]},"retained":false,"historicalAffected":[]}],"coverage":[]}