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        "cveId": "CVE-2026-11897",
        "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "state": "PUBLISHED",
        "assignerShortName": "ibm",
        "dateReserved": "2026-06-10T15:40:44.241Z",
        "datePublished": "2026-07-30T14:18:04.805Z",
        "dateUpdated": "2026-07-30T17:37:03.035Z"
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                "dateUpdated": "2026-07-30T14:18:04.805Z"
            },
            "title": "IBM WebSphere Application Server Liberty is affected by a denial of service vulnerability with HTTP/2",
            "problemTypes": [
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                    "descriptions": [
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                            "lang": "en",
                            "cweId": "CWE-770",
                            "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
                            "type": "CWE"
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                    "vendor": "IBM",
                    "product": "WebSphere Application Server - Liberty",
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                            "status": "affected",
                            "version": "17.0.0.3",
                            "lessThanOrEqual": "26.0.0.7",
                            "versionType": "semver"
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                    "cpes": [
                        "cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*",
                        "cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.7:*:*:*:*:*:*:*"
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                }
            ],
            "descriptions": [
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                    "lang": "en",
                    "value": "IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to a denial of service, caused by sending a specially crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.",
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                            "value": "<p>IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.7 is vulnerable to a denial of service, caused by sending a specially crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.</p>"
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                }
            ],
            "references": [
                {
                    "url": "https://www.ibm.com/support/pages/node/7280695",
                    "tags": [
                        "vendor-advisory",
                        "patch"
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                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "NONE",
                        "baseSeverity": "HIGH",
                        "baseScore": 7.5,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
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            "solutions": [
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                    "lang": "en",
                    "value": "IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH71839.  To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to  How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 .   \n\nFor IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.7 using the servlet-3.1, servlet-4.0, servlet-5.0, servlet-6.0, or servlet-6.1 feature(s) : \n· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves  PH71839 https://www.ibm.com/support/pages/node/7277460 \n--OR--\n· Apply Liberty Fix Pack 26.0.0.8 or later (targeted availability 3Q2026). \n\nAdditional interim fixes may be available and linked off the interim fix download page.",
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                            "value": "<p>IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH71839.  To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to <a href=\"https://www.ibm.com/support/pages/node/6553910\" rel=\"nofollow\">How to determine if Liberty is using a specific feature</a>.   <br/><br/><strong>For IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.7 using the servlet-3.1, servlet-4.0, servlet-5.0, servlet-6.0, or servlet-6.1 feature(s) : </strong><br/>· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves <a href=\"https://www.ibm.com/support/pages/node/7277460\" rel=\"nofollow\">PH71839</a><br/>--OR--<br/>· Apply Liberty Fix Pack 26.0.0.8 or later (targeted availability 3Q2026). <br/><br/>Additional interim fixes may be available and linked off the interim fix download page.</p>"
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                }
            ],
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                {
                    "lang": "en",
                    "value": "This vulnerability was reported to IBM by the Okta Red Team.",
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