{"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": "2026-09-17T18:29:23.937Z"}, "containers": {"cna": {"title": "punchin-email: Operator inbox (FORWARD_TO) disclosed to correspondents on reply \u2014 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"}}}}

{}

{}

{}

{}