{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-91129",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-14T19:36:48.844Z",
        "datePublished": "2026-09-22T19:05:15.559Z",
        "dateUpdated": "2026-09-24T15:25:00.416Z"
    },
    "containers": {
        "cna": {
            "title": "Home Assistant: mDNS Server-Side Request Forgery",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-918",
                            "lang": "en",
                            "description": "CWE-918: Server-Side Request Forgery (SSRF)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "ADJACENT_NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.4,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/home-assistant/core/security/advisories/GHSA-4ghv-53cq-7wp3",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/home-assistant/core/security/advisories/GHSA-4ghv-53cq-7wp3"
                },
                {
                    "name": "https://github.com/home-assistant/core/pull/162941",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/home-assistant/core/pull/162941"
                },
                {
                    "name": "https://github.com/home-assistant/core/commit/0f3c7ca2772b605c0f3c09c88f35e527ea6ea560",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/home-assistant/core/commit/0f3c7ca2772b605c0f3c09c88f35e527ea6ea560"
                },
                {
                    "name": "https://github.com/home-assistant/core/commit/815c708d19aa0c7f59f9ee318b613a5e481a42b3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/home-assistant/core/commit/815c708d19aa0c7f59f9ee318b613a5e481a42b3"
                },
                {
                    "name": "https://github.com/home-assistant/core/releases/tag/2026.2.3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/home-assistant/core/releases/tag/2026.2.3"
                }
            ],
            "affected": [
                {
                    "vendor": "home-assistant",
                    "product": "core",
                    "versions": [
                        {
                            "version": "< 2026.2.3",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-22T19:05:15.559Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Home Assistant is open source home automation software focused on local control and privacy. Prior to 2026.2.3, the IPP integration automatically processed unauthenticated _ipp._tcp.local mDNS announcements in homeassistant/components/ipp/config_flow.py, where async_step_zeroconf passed attacker-controlled host, port, and base_path values to validate_input for printer metadata retrieval. Because the shared HTTP client followed attacker-controlled cross-origin redirects without blocking loopback targets, a local-network attacker could redirect the request to 127.0.0.1 or another internal service without user interaction or prior IPP configuration. This issue is fixed in version 2026.2.3."
                }
            ],
            "source": {
                "advisory": "GHSA-4ghv-53cq-7wp3",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/home-assistant/core/security/advisories/GHSA-4ghv-53cq-7wp3",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-24T15:24:54.228110Z",
                                "id": "CVE-2026-91129",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-09-24T15:25:00.416Z"
                }
            }
        ]
    }
}