{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-103930",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-01T14:20:19.155Z",
        "datePublished": "2026-10-14T18:19:38.256Z",
        "dateUpdated": "2026-10-15T15:06:40.241Z"
    },
    "containers": {
        "cna": {
            "title": "cpp-httplib open_stream serializes CRLF in request target into HTTP request line",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-113",
                            "lang": "en",
                            "description": "CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 3.7,
                        "baseSeverity": "LOW",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-vq69-f637-8fhr",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-vq69-f637-8fhr"
                },
                {
                    "name": "https://github.com/yhirose/cpp-httplib/pull/2501",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/yhirose/cpp-httplib/pull/2501"
                },
                {
                    "name": "https://github.com/yhirose/cpp-httplib/commit/255c075b82cf9f221e6e607e8e6789e6e2bf4c2a",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/yhirose/cpp-httplib/commit/255c075b82cf9f221e6e607e8e6789e6e2bf4c2a"
                },
                {
                    "name": "https://github.com/yhirose/cpp-httplib/releases/tag/v0.51.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/yhirose/cpp-httplib/releases/tag/v0.51.0"
                }
            ],
            "affected": [
                {
                    "vendor": "yhirose",
                    "product": "cpp-httplib",
                    "versions": [
                        {
                            "version": ">= 0.29.0, < 0.51.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-14T18:19:38.256Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "cpp-httplib is a C++ header-only HTTP/HTTPS library. From 0.29.0 until 0.51.0, Client::open_stream in httplib.h accepts a caller-controlled path that reaches detail::write_request_line() without the detail::encode_path() protection used by the ordinary buffered request path. Raw carriage-return and line-feed bytes in the path can therefore split the outbound HTTP/1.1 request line and inject attacker-shaped request metadata. Exploitation requires an embedding application to pass remote user input into the open_stream path and a backend or intermediary that interprets the injected bytes; the established impact is modification of backend-visible request data, not direct confidentiality or availability impact. This issue is fixed in version 0.51.0."
                }
            ],
            "source": {
                "advisory": "GHSA-vq69-f637-8fhr",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-15T13:52:06.645728Z",
                                "id": "CVE-2026-103930",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-15T15:06:40.241Z"
                }
            }
        ]
    }
}