{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-69246",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-03T19:54:19.852Z",
        "datePublished": "2026-08-03T21:07:04.228Z",
        "dateUpdated": "2026-08-04T14:06:40.238Z"
    },
    "containers": {
        "cna": {
            "title": "Guzzle: Noncanonical host can bypass host-based checks",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-180",
                            "lang": "en",
                            "description": "CWE-180: Incorrect Behavior Order: Validate Before Canonicalize",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-436",
                            "lang": "en",
                            "description": "CWE-436: Interpretation Conflict",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-918",
                            "lang": "en",
                            "description": "CWE-918: Server-Side Request Forgery (SSRF)",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-941",
                            "lang": "en",
                            "description": "CWE-941: Incorrectly Specified Destination in a Communication Channel",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.2,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33"
                },
                {
                    "name": "https://github.com/guzzle/guzzle/pull/3907",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/guzzle/guzzle/pull/3907"
                },
                {
                    "name": "https://github.com/guzzle/guzzle/pull/3908",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/guzzle/guzzle/pull/3908"
                },
                {
                    "name": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4"
                },
                {
                    "name": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf"
                },
                {
                    "name": "https://github.com/guzzle/guzzle/releases/tag/7.15.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/guzzle/guzzle/releases/tag/7.15.2"
                },
                {
                    "name": "https://github.com/guzzle/guzzle/releases/tag/8.0.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/guzzle/guzzle/releases/tag/8.0.1"
                }
            ],
            "affected": [
                {
                    "vendor": "guzzle",
                    "product": "guzzle",
                    "versions": [
                        {
                            "version": ">= 8.0.0, < 8.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "< 7.15.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-03T21:07:04.228Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Guzzle is an extensible PHP HTTP client. Prior to 7.15.2 and 8.0.1, Guzzle gives a transport the request URI as text and supplies the Host header separately. The cURL handlers set CURLOPT_URL to the URI exactly as written and push that Host into CURLOPT_HTTPHEADER; StreamHandler does the same through fopen(). libcurl then parses the authority itself, percent-decoding it and, on an IDN-capable build, applying IDNA mapping, and uses the result to resolve, connect, name the TLS peer and address a proxy CONNECT, while the supplied Host suppresses the aligned one libcurl would have generated. For a URI host written as 127.0.0.%31, filter_var() rejects the host as an IP literal, yet libcurl decodes it to 127.0.0.1 and reaches loopback with no DNS lookup while the server receives Host: 127.0.0.%31. An attacker who influences a fetched URI can therefore reach a host the application's checks excluded and read whatever the host exposes of the response. The same divergence moves Guzzle's own decisions onto a spelling the transport does not use: no_proxy selects proxy routing from the literal host, and RedirectMiddleware decides from it whether to strip Authorization and Cookie. Exploitation requires the application to build a request URI from untrusted input and to make a host decision before handing it to Guzzle. This issue is fixed in versions 7.15.2 and 8.0.1."
                }
            ],
            "source": {
                "advisory": "GHSA-v5mv-p594-2x33",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-04T14:06:26.614857Z",
                                "id": "CVE-2026-69246",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-08-04T14:06:40.238Z"
                }
            }
        ]
    }
}