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    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-110354",
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "state": "PUBLISHED",
        "assignerShortName": "mitre",
        "dateReserved": "2026-10-13T23:22:44.319Z",
        "datePublished": "2026-10-22T02:46:38.255Z",
        "dateUpdated": "2026-10-22T02:46:38.255Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "modules": [
                        "mux-h1"
                    ],
                    "product": "HAProxy",
                    "programFiles": [
                        "src/h1_htx.c"
                    ],
                    "programRoutines": [
                        {
                            "name": "h1_parse_msg_data"
                        }
                    ],
                    "repo": "https://git.haproxy.org/git/haproxy.git",
                    "vendor": "HAProxy",
                    "versions": [
                        {
                            "lessThan": "3.0.30",
                            "status": "affected",
                            "version": "3.0.0",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "3.2.26",
                            "status": "affected",
                            "version": "3.2.0",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "3.3.17",
                            "status": "affected",
                            "version": "3.3.0",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "3.4.6",
                            "status": "affected",
                            "version": "3.4.0",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "3.5-dev9",
                            "status": "affected",
                            "version": "3.5-dev",
                            "versionType": "custom"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "HAProxy Enterprise Edition",
                    "vendor": "HAProxy",
                    "versions": [
                        {
                            "lessThan": "3.0r1-362.1441",
                            "status": "affected",
                            "version": "3.0r1",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "3.2r1-378.1259",
                            "status": "affected",
                            "version": "3.2r1",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "3.3r1-377.1005",
                            "status": "affected",
                            "version": "3.3r1",
                            "versionType": "custom"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "HAProxy Kubernetes Ingress Controller",
                    "vendor": "HAProxy Technologies",
                    "versions": [
                        {
                            "lessThan": "3.2.17",
                            "status": "affected",
                            "version": "3.2.0",
                            "versionType": "custom"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "Kubernetes Ingress Controller Enterprise",
                    "vendor": "HAProxy Technologies",
                    "versions": [
                        {
                            "lessThan": "3.2.17-ee1",
                            "status": "affected",
                            "version": "3.2.0",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "3.0.16-ee17",
                            "status": "affected",
                            "version": "3.0",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "1.11.14-ee11",
                            "status": "affected",
                            "version": "1.11",
                            "versionType": "custom"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "HAProxy 3 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (persistent worker-thread CPU exhaustion) via an HTTP/1.1 chunked request. Although the H1 multiplexer drains the request before closing the stream, the parser repeatedly re-processes the same bytes without making progress. The affected thread stays busy at 100% CPU after timeouts expire and after the client disconnects, and repeated requests can consume all worker threads until the process is restarted."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-835",
                            "description": "CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
                "shortName": "mitre",
                "dateUpdated": "2026-10-22T02:46:38.255Z"
            },
            "references": [
                {
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://git.haproxy.org/?p=haproxy.git;a=commit;h=077906da140a35873bf451d7e9f67646c9f37c81"
                }
            ],
            "x_generator": {
                "engine": "CVE-Request-form 0.0.1"
            }
        }
    }
}