{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-11541","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","state":"PUBLISHED","assignerShortName":"ibm","dateReserved":"2026-06-08T02:55:08.653Z","datePublished":"2026-06-30T20:56:04.135Z","dateUpdated":"2026-07-29T18:12:49.178Z"},"containers":{"cna":{"providerMetadata":{"orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","shortName":"ibm","dateUpdated":"2026-07-29T18:12:49.178Z"},"title":"Inconsistent Interpretation of HTTP Requests in CICS Transaction Gateway for Multiplatforms.","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-444","description":"CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","type":"CWE"}]}],"affected":[{"vendor":"IBM","product":"CICS Transaction Gateway for Multiplatforms","versions":[{"status":"affected","version":"9.1"},{"status":"affected","version":"9.2"},{"status":"affected","version":"9.3"},{"status":"affected","version":"10.1"}]}],"descriptions":[{"lang":"en","value":"IBM CICS Transaction Gateway for Multiplatforms 9.1, 9.2, 9.3, and 10.1 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 affected by an HTTP request smuggling vulnerability.","supportingMedia":[{"type":"text/html","base64":false,"value":"

IBM CICS Transaction Gateway for Multiplatforms 9.1, 9.2, 9.3, and 10.1 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 affected by an HTTP request smuggling vulnerability.

"}]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7281750","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE","baseSeverity":"HIGH","baseScore":7.4,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}}],"solutions":[{"lang":"en","value":"IBM strongly recommends addressing the vulnerabilities now by downloading and applying the CICS Transaction Gateway for Multiplatforms fixes.\n\n\n\nProduct\n\nVRMF\n\nAPAR\n\nRemediation/First Fix\n\nCICS Transaction Gateway for Multiplatforms9.1.0.0\n\n-\n\nPSIRT fixes for CICS Transaction Gateway for Multiplatforms will be provided only to customers covered by Extended Support and only upon request through an IBM Support case.\n\nCICS Transaction Gateway for Multiplatforms9.2.0.0\n\nPH72094\n\n\n\n AIX Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n pLinux Big Endian Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n Windows Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n iLinux Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n zLinux Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n\n\nCICS Transaction Gateway for Multiplatforms9.3.0.0\n\nPH72094\n\n\n\n AIX Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n pLinux Little Endian Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n pLinux Big Endian Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n Windows Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n iLinux Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n zLinux Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n x86 Container Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n 390x Container Link https://www.ibm.com/support/fixcentral/quickorder \n\nCICS Transaction Gateway for Multiplatforms10.1.0.0\n\nPH72095\n\n\n\n AIX Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n pLinux Little Endian Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n Windows Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n iLinux Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n zLinux Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n x86 Container Link https://www.ibm.com/support/fixcentral/quickorder \n\n\n\n 390x Container Link https://www.ibm.com/support/fixcentral/quickorder","supportingMedia":[{"type":"text/html","base64":false,"value":"

IBM strongly recommends addressing the vulnerabilities now by downloading and applying the CICS Transaction Gateway for Multiplatforms fixes.

Product
VRMF
APAR
Remediation/First Fix
CICS Transaction Gateway for Multiplatforms9.1.0.0

-

PSIRT fixes for CICS Transaction Gateway for Multiplatforms will be provided only to customers covered by Extended Support and only upon request through an IBM Support case.
CICS Transaction Gateway for Multiplatforms9.2.0.0

PH72094

AIX Link

pLinux Big Endian Link

Windows Link

iLinux Link

zLinux Link

CICS Transaction Gateway for Multiplatforms9.3.0.0

PH72094

AIX Link

pLinux Little Endian Link

pLinux Big Endian Link

Windows Link

iLinux Link

zLinux Link

x86 Container Link

390x Container Link

CICS Transaction Gateway for Multiplatforms10.1.0.0

PH72095

AIX Link

pLinux Little Endian Link

Windows Link

iLinux Link

zLinux Link

x86 Container Link

390x Container Link

"}]}],"x_generator":{"engine":"ibm-cvegen"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-01T14:52:04.153923Z","id":"CVE-2026-11541","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-01T14:52:15.909Z"}}]}}