{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54649",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-15T20:16:46.198Z",
        "datePublished": "2026-09-17T18:29:23.937Z",
        "dateUpdated": "2026-09-24T20:55:22.973Z"
    },
    "containers": {
        "cna": {
            "title": "punchin-email: Operator inbox (FORWARD_TO) disclosed to correspondents on reply — Cloudflare forward() drops the relay Reply-To",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-200",
                            "lang": "en",
                            "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-201",
                            "lang": "en",
                            "description": "CWE-201: Insertion of Sensitive Information Into Sent Data",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "ACTIVE",
                        "vulnConfidentialityImpact": "LOW",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 2.1,
                        "baseSeverity": "LOW",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/PunchIn-App/punchin-email/security/advisories/GHSA-2ph7-69xm-hmwv",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/PunchIn-App/punchin-email/security/advisories/GHSA-2ph7-69xm-hmwv"
                },
                {
                    "name": "https://github.com/PunchIn-App/punchin-email/pull/66",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/PunchIn-App/punchin-email/pull/66"
                },
                {
                    "name": "https://github.com/PunchIn-App/punchin-email/commit/593685ffc0b8eb3949a4838e7bfe1e97b953d084",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/PunchIn-App/punchin-email/commit/593685ffc0b8eb3949a4838e7bfe1e97b953d084"
                },
                {
                    "name": "https://github.com/PunchIn-App/punchin-email/releases/tag/v1.5.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/PunchIn-App/punchin-email/releases/tag/v1.5.0"
                }
            ],
            "affected": [
                {
                    "vendor": "PunchIn-App",
                    "product": "punchin-email",
                    "versions": [
                        {
                            "version": "< 1.5.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-17T18:29:23.937Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "punchin-email is a Cloudflare Email Worker that provides two-way role aliases while relaying mail to a private inbox. Prior to 1.5.0, handleInbound delivers inbound alias mail with message.forward(), which silently drops the added Reply-To header intended to route responses through the relay. When a correspondent sends mail to an alias and the operator replies, the mail client can send directly to the correspondent from the private FORWARD_TO inbox address, exposing that address. The disclosure is limited to the operator's own email address and does not expose third-party data or provide code execution or authentication bypass. This issue is fixed in version 1.5.0."
                }
            ],
            "source": {
                "advisory": "GHSA-2ph7-69xm-hmwv",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2026-54649",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2026-09-24T20:39:47.675180Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-24T20:55:22.973Z"
                }
            }
        ]
    }
}